Release 1.21.901.21.90

59 files changed, 576 insertions, 228 deletions

diff --git a/meson.build b/meson.build
index e925ec907a..7d3bebbaac 100644
--- a/meson.build
+++ b/meson.build
@@ -1,5 +1,5 @@
 project('gstreamer-full', 'c',
-  version : '1.21.3.1',
+  version : '1.21.90',
   meson_version : '>= 0.62.0',
   default_options : ['buildtype=debugoptimized',
                      # Needed due to https://github.com/mesonbuild/meson/issues/1889,
diff --git a/subprojects/gst-devtools/NEWS b/subprojects/gst-devtools/NEWS
index cfa47b52e4..d801110ad8 100644
--- a/subprojects/gst-devtools/NEWS
+++ b/subprojects/gst-devtools/NEWS
@@ -1,28 +1,23 @@
 GStreamer 1.22 Release Notes
 
 GStreamer 1.22 has not been released yet. It is scheduled for release
-around the end of December 2022 / beginning of January 2023.
+around in January 2023.
 
 1.21.x is the unstable development version that is being developed in
 the git master branch and which will eventually result in 1.22, and
-1.21.3 is the current development release in that series
+1.21.90 is the first release candidate for 1.22 (rc1) in that series
 
 A feature freeze is now into effect for the 1.21 branch, but newly-added
 API might still change until the final 1.22.0 stable release, and minor
 features may also still be added until then.
 
-A first 1.22 release candidate (1.21.90) is expected towards
-mid-December, followed by more release candiates until the new 1.22
-stable release around the end of December 2022 / beginning of January
-2023.
-
 1.22 will be backwards-compatible to the stable 1.20, 1.18, 1.16, 1.14,
 1.12, 1.10, 1.8, 1.6,, 1.4, 1.2 and 1.0 release series.
 
 See https://gstreamer.freedesktop.org/releases/1.22/ for the latest
 version of this document.
 
-Last updated: Monday 5 December 2022, 01:00 UTC (log)
+Last updated: Thursday 12 January 2023, 15:00 UTC (log)
 
 Introduction
 
@@ -193,6 +188,13 @@ Build and Dependencies
 
 -   this section will be filled in in due course
 
+-   GLib >= 2.64 is now required (technically it still says >= 2.62 but
+    the plan is to bump that to 2.64 soon once some CI issues are sorted
+    out)
+
+-   libnice >= 0.1.21 is now required and contains important fixes for
+    GStreamer’s WebRTC stack.
+
 gst-build
 
 -   this section will be filled in in due course
@@ -241,6 +243,10 @@ Windows
 
 -   this section will be filled in in due course
 
+-   The Windows universal UWP build is currently non-functional and will
+    need updating after the recent GLib upgrade. It is unclear if anyone
+    is using these binaries, so if you are please make yourself known.
+
 Linux
 
 -   this section will be filled in in due course
@@ -253,6 +259,14 @@ Possibly Breaking Changes
 
 -   this section will be filled in in due course
 
+-   the Opus audio payloader and depayloader no longer accept the lower
+    case encoding-format=multiopus but instead produce and accept only
+    the upper case variant encoding-format=MULTIOPUS, since those should
+    always be upper case in GStreamer (caps fields are always case
+    sensitive). This should hopefully only affect applications where RTP
+    caps are set manually and multi-channel audio (>= 3 channels) is
+    used.
+
 Known Issues
 
 -   this section will be filled in in due course
@@ -323,7 +337,7 @@ the git 1.22 branch, which will be a stable branch.
 
 1.22.0
 
-1.22.0 is scheduled to be released around December 2022.
+1.22.0 is scheduled to be released in January 2023.
 
 Schedule for 1.24
 
diff --git a/subprojects/gst-devtools/RELEASE b/subprojects/gst-devtools/RELEASE
index 5032d7bc4e..f5b09a5528 100644
--- a/subprojects/gst-devtools/RELEASE
+++ b/subprojects/gst-devtools/RELEASE
@@ -1,13 +1,15 @@
-This is GStreamer gst-devtools 1.21.3.
+This is GStreamer gst-devtools 1.21.90.
 
-GStreamer 1.21 is the unstable development branch leading up to the next major
-stable version which will be 1.22.
+The GStreamer team is thrilled to announce a first release candidate of a new
+major feature release of your favourite cross-platform multimedia framework!
 
-The 1.21 development series adds new features on top of the 1.20 series and is
-part of the API and ABI-stable 1.x release series of the GStreamer multimedia
-framework.
+As always, this release is again packed with new features, bug fixes and
+other improvements.
 
-Full release notes will one day be found at:
+The 1.22 release series adds new features on top of the 1.20 series and is
+part of the API and ABI-stable 1.x release series.
+
+Full release notes will soon be available at:
 
   https://gstreamer.freedesktop.org/releases/1.22/
 
@@ -51,6 +53,9 @@ with other GStreamer modules for a complete multimedia experience.
 
  - gst-editing-services: library an plugins for non-linear editing
 
+ - gst-plugins-rs: an exciting collection of well-maintained plugins written
+                   in the Rust programming language (usable from any language)
+
 ==== Download ====
 
 You can find source releases of gstreamer in the download
diff --git a/subprojects/gst-devtools/gst-devtools.doap b/subprojects/gst-devtools/gst-devtools.doap
index e5b08ed2bf..2ea4ef52df 100644
--- a/subprojects/gst-devtools/gst-devtools.doap
+++ b/subprojects/gst-devtools/gst-devtools.doap
@@ -55,6 +55,16 @@
 
  <release>
   <Version>
+   <revision>1.21.90</revision>
+   <branch>main</branch>
+   <name></name>
+   <created>2023-01-13</created>
+   <file-release rdf:resource="https://gstreamer.freedesktop.org/src/gst-devtools/gst-devtools-1.21.90.tar.xz" />
+  </Version>
+ </release>
+
+ <release>
+  <Version>
    <revision>1.21.3</revision>
    <branch>main</branch>
    <name></name>
diff --git a/subprojects/gst-devtools/meson.build b/subprojects/gst-devtools/meson.build
index 0da6a4fa3b..56fb5524ee 100644
--- a/subprojects/gst-devtools/meson.build
+++ b/subprojects/gst-devtools/meson.build
@@ -1,5 +1,5 @@
 project('gst-devtools', 'c',
-  version : '1.21.3.1',
+  version : '1.21.90',
   meson_version : '>= 0.62',
   default_options : [ 'warning_level=1',
                       'c_std=gnu99',
diff --git a/subprojects/gst-docs/meson.build b/subprojects/gst-docs/meson.build
index 38936875c6..d99de438c9 100644
--- a/subprojects/gst-docs/meson.build
+++ b/subprojects/gst-docs/meson.build
@@ -1,5 +1,5 @@
 project('GStreamer manuals and tutorials', 'c',
-  version: '1.21.3.1',
+  version: '1.21.90',
   meson_version : '>= 0.62')
 
 hotdoc_p = find_program('hotdoc')
diff --git a/subprojects/gst-editing-services/NEWS b/subprojects/gst-editing-services/NEWS
index cfa47b52e4..d801110ad8 100644
--- a/subprojects/gst-editing-services/NEWS
+++ b/subprojects/gst-editing-services/NEWS
@@ -1,28 +1,23 @@
 GStreamer 1.22 Release Notes
 
 GStreamer 1.22 has not been released yet. It is scheduled for release
-around the end of December 2022 / beginning of January 2023.
+around in January 2023.
 
 1.21.x is the unstable development version that is being developed in
 the git master branch and which will eventually result in 1.22, and
-1.21.3 is the current development release in that series
+1.21.90 is the first release candidate for 1.22 (rc1) in that series
 
 A feature freeze is now into effect for the 1.21 branch, but newly-added
 API might still change until the final 1.22.0 stable release, and minor
 features may also still be added until then.
 
-A first 1.22 release candidate (1.21.90) is expected towards
-mid-December, followed by more release candiates until the new 1.22
-stable release around the end of December 2022 / beginning of January
-2023.
-
 1.22 will be backwards-compatible to the stable 1.20, 1.18, 1.16, 1.14,
 1.12, 1.10, 1.8, 1.6,, 1.4, 1.2 and 1.0 release series.
 
 See https://gstreamer.freedesktop.org/releases/1.22/ for the latest
 version of this document.
 
-Last updated: Monday 5 December 2022, 01:00 UTC (log)
+Last updated: Thursday 12 January 2023, 15:00 UTC (log)
 
 Introduction
 
@@ -193,6 +188,13 @@ Build and Dependencies
 
 -   this section will be filled in in due course
 
+-   GLib >= 2.64 is now required (technically it still says >= 2.62 but
+    the plan is to bump that to 2.64 soon once some CI issues are sorted
+    out)
+
+-   libnice >= 0.1.21 is now required and contains important fixes for
+    GStreamer’s WebRTC stack.
+
 gst-build
 
 -   this section will be filled in in due course
@@ -241,6 +243,10 @@ Windows
 
 -   this section will be filled in in due course
 
+-   The Windows universal UWP build is currently non-functional and will
+    need updating after the recent GLib upgrade. It is unclear if anyone
+    is using these binaries, so if you are please make yourself known.
+
 Linux
 
 -   this section will be filled in in due course
@@ -253,6 +259,14 @@ Possibly Breaking Changes
 
 -   this section will be filled in in due course
 
+-   the Opus audio payloader and depayloader no longer accept the lower
+    case encoding-format=multiopus but instead produce and accept only
+    the upper case variant encoding-format=MULTIOPUS, since those should
+    always be upper case in GStreamer (caps fields are always case
+    sensitive). This should hopefully only affect applications where RTP
+    caps are set manually and multi-channel audio (>= 3 channels) is
+    used.
+
 Known Issues
 
 -   this section will be filled in in due course
@@ -323,7 +337,7 @@ the git 1.22 branch, which will be a stable branch.
 
 1.22.0
 
-1.22.0 is scheduled to be released around December 2022.
+1.22.0 is scheduled to be released in January 2023.
 
 Schedule for 1.24
 
diff --git a/subprojects/gst-editing-services/RELEASE b/subprojects/gst-editing-services/RELEASE
index 29752d5084..10dbba7b29 100644
--- a/subprojects/gst-editing-services/RELEASE
+++ b/subprojects/gst-editing-services/RELEASE
@@ -1,13 +1,15 @@
-This is GStreamer gst-editing-services 1.21.3.
+This is GStreamer gst-editing-services 1.21.90.
 
-GStreamer 1.21 is the unstable development branch leading up to the next major
-stable version which will be 1.22.
+The GStreamer team is thrilled to announce a first release candidate of a new
+major feature release of your favourite cross-platform multimedia framework!
 
-The 1.21 development series adds new features on top of the 1.20 series and is
-part of the API and ABI-stable 1.x release series of the GStreamer multimedia
-framework.
+As always, this release is again packed with new features, bug fixes and
+other improvements.
 
-Full release notes will one day be found at:
+The 1.22 release series adds new features on top of the 1.20 series and is
+part of the API and ABI-stable 1.x release series.
+
+Full release notes will soon be available at:
 
   https://gstreamer.freedesktop.org/releases/1.22/
 
@@ -51,6 +53,9 @@ with other GStreamer modules for a complete multimedia experience.
 
  - gst-editing-services: library an plugins for non-linear editing
 
+ - gst-plugins-rs: an exciting collection of well-maintained plugins written
+                   in the Rust programming language (usable from any language)
+
 ==== Download ====
 
 You can find source releases of gstreamer in the download
diff --git a/subprojects/gst-editing-services/gst-editing-services.doap b/subprojects/gst-editing-services/gst-editing-services.doap
index 5487db117f..b1d18043ad 100644
--- a/subprojects/gst-editing-services/gst-editing-services.doap
+++ b/subprojects/gst-editing-services/gst-editing-services.doap
@@ -32,6 +32,16 @@ GStreamer library for creating audio and video editors
 
  <release>
   <Version>
+   <revision>1.21.90</revision>
+   <branch>main</branch>
+   <name></name>
+   <created>2023-01-13</created>
+   <file-release rdf:resource="https://gstreamer.freedesktop.org/src/gst-editing-services/gst-editing-services-1.21.90.tar.xz" />
+  </Version>
+ </release>
+
+ <release>
+  <Version>
    <revision>1.21.3</revision>
    <branch>main</branch>
    <name></name>
diff --git a/subprojects/gst-editing-services/meson.build b/subprojects/gst-editing-services/meson.build
index 1fe7e6cc0c..b808588fad 100644
--- a/subprojects/gst-editing-services/meson.build
+++ b/subprojects/gst-editing-services/meson.build
@@ -1,5 +1,5 @@
 project('gst-editing-services', 'c',
-  version : '1.21.3.1',
+  version : '1.21.90',
   meson_version : '>= 0.62',
   default_options : [ 'warning_level=1',
                       'buildtype=debugoptimized' ])
diff --git a/subprojects/gst-examples/meson.build b/subprojects/gst-examples/meson.build
index c4e5a15bdf..410ce25f13 100644
--- a/subprojects/gst-examples/meson.build
+++ b/subprojects/gst-examples/meson.build
@@ -1,4 +1,4 @@
-project('gst-examples', 'c', version : '1.21.3.1', license : 'LGPL')
+project('gst-examples', 'c', version : '1.21.90', license : 'LGPL')
 
 cc = meson.get_compiler('c')
 m_dep = cc.find_library('m', required : false)
diff --git a/subprojects/gst-integration-testsuites/meson.build b/subprojects/gst-integration-testsuites/meson.build
index c449da2585..072b593230 100644
--- a/subprojects/gst-integration-testsuites/meson.build
+++ b/subprojects/gst-integration-testsuites/meson.build
@@ -1 +1 @@
-project('gst-integration-testsuites', [], version: '1.21.3.1', meson_version : '>= 0.62', license: 'LGPL')
+project('gst-integration-testsuites', [], version: '1.21.90', meson_version : '>= 0.62', license: 'LGPL')
diff --git a/subprojects/gst-libav/NEWS b/subprojects/gst-libav/NEWS
index cfa47b52e4..d801110ad8 100644
--- a/subprojects/gst-libav/NEWS
+++ b/subprojects/gst-libav/NEWS
@@ -1,28 +1,23 @@
 GStreamer 1.22 Release Notes
 
 GStreamer 1.22 has not been released yet. It is scheduled for release
-around the end of December 2022 / beginning of January 2023.
+around in January 2023.
 
 1.21.x is the unstable development version that is being developed in
 the git master branch and which will eventually result in 1.22, and
-1.21.3 is the current development release in that series
+1.21.90 is the first release candidate for 1.22 (rc1) in that series
 
 A feature freeze is now into effect for the 1.21 branch, but newly-added
 API might still change until the final 1.22.0 stable release, and minor
 features may also still be added until then.
 
-A first 1.22 release candidate (1.21.90) is expected towards
-mid-December, followed by more release candiates until the new 1.22
-stable release around the end of December 2022 / beginning of January
-2023.
-
 1.22 will be backwards-compatible to the stable 1.20, 1.18, 1.16, 1.14,
 1.12, 1.10, 1.8, 1.6,, 1.4, 1.2 and 1.0 release series.
 
 See https://gstreamer.freedesktop.org/releases/1.22/ for the latest
 version of this document.
 
-Last updated: Monday 5 December 2022, 01:00 UTC (log)
+Last updated: Thursday 12 January 2023, 15:00 UTC (log)
 
 Introduction
 
@@ -193,6 +188,13 @@ Build and Dependencies
 
 -   this section will be filled in in due course
 
+-   GLib >= 2.64 is now required (technically it still says >= 2.62 but
+    the plan is to bump that to 2.64 soon once some CI issues are sorted
+    out)
+
+-   libnice >= 0.1.21 is now required and contains important fixes for
+    GStreamer’s WebRTC stack.
+
 gst-build
 
 -   this section will be filled in in due course
@@ -241,6 +243,10 @@ Windows
 
 -   this section will be filled in in due course
 
+-   The Windows universal UWP build is currently non-functional and will
+    need updating after the recent GLib upgrade. It is unclear if anyone
+    is using these binaries, so if you are please make yourself known.
+
 Linux
 
 -   this section will be filled in in due course
@@ -253,6 +259,14 @@ Possibly Breaking Changes
 
 -   this section will be filled in in due course
 
+-   the Opus audio payloader and depayloader no longer accept the lower
+    case encoding-format=multiopus but instead produce and accept only
+    the upper case variant encoding-format=MULTIOPUS, since those should
+    always be upper case in GStreamer (caps fields are always case
+    sensitive). This should hopefully only affect applications where RTP
+    caps are set manually and multi-channel audio (>= 3 channels) is
+    used.
+
 Known Issues
 
 -   this section will be filled in in due course
@@ -323,7 +337,7 @@ the git 1.22 branch, which will be a stable branch.
 
 1.22.0
 
-1.22.0 is scheduled to be released around December 2022.
+1.22.0 is scheduled to be released in January 2023.
 
 Schedule for 1.24
 
diff --git a/subprojects/gst-libav/RELEASE b/subprojects/gst-libav/RELEASE
index 6430cf0d12..e107ef6ce0 100644
--- a/subprojects/gst-libav/RELEASE
+++ b/subprojects/gst-libav/RELEASE
@@ -1,13 +1,15 @@
-This is GStreamer gst-libav 1.21.3.
+This is GStreamer gst-libav 1.21.90.
 
-GStreamer 1.21 is the unstable development branch leading up to the next major
-stable version which will be 1.22.
+The GStreamer team is thrilled to announce a first release candidate of a new
+major feature release of your favourite cross-platform multimedia framework!
 
-The 1.21 development series adds new features on top of the 1.20 series and is
-part of the API and ABI-stable 1.x release series of the GStreamer multimedia
-framework.
+As always, this release is again packed with new features, bug fixes and
+other improvements.
 
-Full release notes will one day be found at:
+The 1.22 release series adds new features on top of the 1.20 series and is
+part of the API and ABI-stable 1.x release series.
+
+Full release notes will soon be available at:
 
   https://gstreamer.freedesktop.org/releases/1.22/
 
@@ -51,6 +53,9 @@ with other GStreamer modules for a complete multimedia experience.
 
  - gst-editing-services: library an plugins for non-linear editing
 
+ - gst-plugins-rs: an exciting collection of well-maintained plugins written
+                   in the Rust programming language (usable from any language)
+
 ==== Download ====
 
 You can find source releases of gstreamer in the download
diff --git a/subprojects/gst-libav/gst-libav.doap b/subprojects/gst-libav/gst-libav.doap
index 432ba2e779..20dccc14a6 100644
--- a/subprojects/gst-libav/gst-libav.doap
+++ b/subprojects/gst-libav/gst-libav.doap
@@ -34,6 +34,16 @@ colorspace conversion elements.
 
  <release>
   <Version>
+   <revision>1.21.90</revision>
+   <branch>main</branch>
+   <name></name>
+   <created>2023-01-13</created>
+   <file-release rdf:resource="https://gstreamer.freedesktop.org/src/gst-libav/gst-libav-1.21.90.tar.xz" />
+  </Version>
+ </release>
+
+ <release>
+  <Version>
    <revision>1.21.3</revision>
    <branch>main</branch>
    <name></name>
diff --git a/subprojects/gst-libav/meson.build b/subprojects/gst-libav/meson.build
index 8dcf7b06ca..94bde8b90f 100644
--- a/subprojects/gst-libav/meson.build
+++ b/subprojects/gst-libav/meson.build
@@ -1,5 +1,5 @@
 project('gst-libav', 'c',
-  version : '1.21.3.1',
+  version : '1.21.90',
   meson_version : '>= 0.62',
   default_options : [ 'warning_level=1',
                       'buildtype=debugoptimized' ])
diff --git a/subprojects/gst-omx/NEWS b/subprojects/gst-omx/NEWS
index cfa47b52e4..d801110ad8 100644
--- a/subprojects/gst-omx/NEWS
+++ b/subprojects/gst-omx/NEWS
@@ -1,28 +1,23 @@
 GStreamer 1.22 Release Notes
 
 GStreamer 1.22 has not been released yet. It is scheduled for release
-around the end of December 2022 / beginning of January 2023.
+around in January 2023.
 
 1.21.x is the unstable development version that is being developed in
 the git master branch and which will eventually result in 1.22, and
-1.21.3 is the current development release in that series
+1.21.90 is the first release candidate for 1.22 (rc1) in that series
 
 A feature freeze is now into effect for the 1.21 branch, but newly-added
 API might still change until the final 1.22.0 stable release, and minor
 features may also still be added until then.
 
-A first 1.22 release candidate (1.21.90) is expected towards
-mid-December, followed by more release candiates until the new 1.22
-stable release around the end of December 2022 / beginning of January
-2023.
-
 1.22 will be backwards-compatible to the stable 1.20, 1.18, 1.16, 1.14,
 1.12, 1.10, 1.8, 1.6,, 1.4, 1.2 and 1.0 release series.
 
 See https://gstreamer.freedesktop.org/releases/1.22/ for the latest
 version of this document.
 
-Last updated: Monday 5 December 2022, 01:00 UTC (log)
+Last updated: Thursday 12 January 2023, 15:00 UTC (log)
 
 Introduction
 
@@ -193,6 +188,13 @@ Build and Dependencies
 
 -   this section will be filled in in due course
 
+-   GLib >= 2.64 is now required (technically it still says >= 2.62 but
+    the plan is to bump that to 2.64 soon once some CI issues are sorted
+    out)
+
+-   libnice >= 0.1.21 is now required and contains important fixes for
+    GStreamer’s WebRTC stack.
+
 gst-build
 
 -   this section will be filled in in due course
@@ -241,6 +243,10 @@ Windows
 
 -   this section will be filled in in due course
 
+-   The Windows universal UWP build is currently non-functional and will
+    need updating after the recent GLib upgrade. It is unclear if anyone
+    is using these binaries, so if you are please make yourself known.
+
 Linux
 
 -   this section will be filled in in due course
@@ -253,6 +259,14 @@ Possibly Breaking Changes
 
 -   this section will be filled in in due course
 
+-   the Opus audio payloader and depayloader no longer accept the lower
+    case encoding-format=multiopus but instead produce and accept only
+    the upper case variant encoding-format=MULTIOPUS, since those should
+    always be upper case in GStreamer (caps fields are always case
+    sensitive). This should hopefully only affect applications where RTP
+    caps are set manually and multi-channel audio (>= 3 channels) is
+    used.
+
 Known Issues
 
 -   this section will be filled in in due course
@@ -323,7 +337,7 @@ the git 1.22 branch, which will be a stable branch.
 
 1.22.0
 
-1.22.0 is scheduled to be released around December 2022.
+1.22.0 is scheduled to be released in January 2023.
 
 Schedule for 1.24
 
diff --git a/subprojects/gst-omx/RELEASE b/subprojects/gst-omx/RELEASE
index 837d07e895..dac4a5fff9 100644
--- a/subprojects/gst-omx/RELEASE
+++ b/subprojects/gst-omx/RELEASE
@@ -1,13 +1,15 @@
-This is GStreamer gst-omx 1.21.3.
+This is GStreamer gst-omx 1.21.90.
 
-GStreamer 1.21 is the unstable development branch leading up to the next major
-stable version which will be 1.22.
+The GStreamer team is thrilled to announce a first release candidate of a new
+major feature release of your favourite cross-platform multimedia framework!
 
-The 1.21 development series adds new features on top of the 1.20 series and is
-part of the API and ABI-stable 1.x release series of the GStreamer multimedia
-framework.
+As always, this release is again packed with new features, bug fixes and
+other improvements.
 
-Full release notes will one day be found at:
+The 1.22 release series adds new features on top of the 1.20 series and is
+part of the API and ABI-stable 1.x release series.
+
+Full release notes will soon be available at:
 
   https://gstreamer.freedesktop.org/releases/1.22/
 
@@ -51,6 +53,9 @@ with other GStreamer modules for a complete multimedia experience.
 
  - gst-editing-services: library an plugins for non-linear editing
 
+ - gst-plugins-rs: an exciting collection of well-maintained plugins written
+                   in the Rust programming language (usable from any language)
+
 ==== Download ====
 
 You can find source releases of gstreamer in the download
diff --git a/subprojects/gst-omx/gst-omx.doap b/subprojects/gst-omx/gst-omx.doap
index f0323d1cca..a636e4e448 100644
--- a/subprojects/gst-omx/gst-omx.doap
+++ b/subprojects/gst-omx/gst-omx.doap
@@ -33,6 +33,16 @@ a basic collection of elements
 
  <release>
   <Version>
+   <revision>1.21.90</revision>
+   <branch>main</branch>
+   <name></name>
+   <created>2023-01-13</created>
+   <file-release rdf:resource="https://gstreamer.freedesktop.org/src/gst-omx/gst-omx-1.21.90.tar.xz" />
+  </Version>
+ </release>
+
+ <release>
+  <Version>
    <revision>1.21.3</revision>
    <branch>main</branch>
    <name></name>
diff --git a/subprojects/gst-omx/meson.build b/subprojects/gst-omx/meson.build
index 3fc23569bb..e40bfdcf78 100644
--- a/subprojects/gst-omx/meson.build
+++ b/subprojects/gst-omx/meson.build
@@ -1,5 +1,5 @@
 project('gst-omx', 'c',
-  version : '1.21.3.1',
+  version : '1.21.90',
   meson_version : '>= 0.62',
   default_options : [ 'warning_level=1',
                       'buildtype=debugoptimized' ])
diff --git a/subprojects/gst-plugins-bad/NEWS b/subprojects/gst-plugins-bad/NEWS
index cfa47b52e4..d801110ad8 100644
--- a/subprojects/gst-plugins-bad/NEWS
+++ b/subprojects/gst-plugins-bad/NEWS
@@ -1,28 +1,23 @@
 GStreamer 1.22 Release Notes
 
 GStreamer 1.22 has not been released yet. It is scheduled for release
-around the end of December 2022 / beginning of January 2023.
+around in January 2023.
 
 1.21.x is the unstable development version that is being developed in
 the git master branch and which will eventually result in 1.22, and
-1.21.3 is the current development release in that series
+1.21.90 is the first release candidate for 1.22 (rc1) in that series
 
 A feature freeze is now into effect for the 1.21 branch, but newly-added
 API might still change until the final 1.22.0 stable release, and minor
 features may also still be added until then.
 
-A first 1.22 release candidate (1.21.90) is expected towards
-mid-December, followed by more release candiates until the new 1.22
-stable release around the end of December 2022 / beginning of January
-2023.
-
 1.22 will be backwards-compatible to the stable 1.20, 1.18, 1.16, 1.14,
 1.12, 1.10, 1.8, 1.6,, 1.4, 1.2 and 1.0 release series.
 
 See https://gstreamer.freedesktop.org/releases/1.22/ for the latest
 version of this document.
 
-Last updated: Monday 5 December 2022, 01:00 UTC (log)
+Last updated: Thursday 12 January 2023, 15:00 UTC (log)
 
 Introduction
 
@@ -193,6 +188,13 @@ Build and Dependencies
 
 -   this section will be filled in in due course
 
+-   GLib >= 2.64 is now required (technically it still says >= 2.62 but
+    the plan is to bump that to 2.64 soon once some CI issues are sorted
+    out)
+
+-   libnice >= 0.1.21 is now required and contains important fixes for
+    GStreamer’s WebRTC stack.
+
 gst-build
 
 -   this section will be filled in in due course
@@ -241,6 +243,10 @@ Windows
 
 -   this section will be filled in in due course
 
+-   The Windows universal UWP build is currently non-functional and will
+    need updating after the recent GLib upgrade. It is unclear if anyone
+    is using these binaries, so if you are please make yourself known.
+
 Linux
 
 -   this section will be filled in in due course
@@ -253,6 +259,14 @@ Possibly Breaking Changes
 
 -   this section will be filled in in due course
 
+-   the Opus audio payloader and depayloader no longer accept the lower
+    case encoding-format=multiopus but instead produce and accept only
+    the upper case variant encoding-format=MULTIOPUS, since those should
+    always be upper case in GStreamer (caps fields are always case
+    sensitive). This should hopefully only affect applications where RTP
+    caps are set manually and multi-channel audio (>= 3 channels) is
+    used.
+
 Known Issues
 
 -   this section will be filled in in due course
@@ -323,7 +337,7 @@ the git 1.22 branch, which will be a stable branch.
 
 1.22.0
 
-1.22.0 is scheduled to be released around December 2022.
+1.22.0 is scheduled to be released in January 2023.
 
 Schedule for 1.24
 
diff --git a/subprojects/gst-plugins-bad/RELEASE b/subprojects/gst-plugins-bad/RELEASE
index e162ccf3e7..40c93e6f73 100644
--- a/subprojects/gst-plugins-bad/RELEASE
+++ b/subprojects/gst-plugins-bad/RELEASE
@@ -1,13 +1,15 @@
-This is GStreamer gst-plugins-bad 1.21.3.
+This is GStreamer gst-plugins-bad 1.21.90.
 
-GStreamer 1.21 is the unstable development branch leading up to the next major
-stable version which will be 1.22.
+The GStreamer team is thrilled to announce a first release candidate of a new
+major feature release of your favourite cross-platform multimedia framework!
 
-The 1.21 development series adds new features on top of the 1.20 series and is
-part of the API and ABI-stable 1.x release series of the GStreamer multimedia
-framework.
+As always, this release is again packed with new features, bug fixes and
+other improvements.
 
-Full release notes will one day be found at:
+The 1.22 release series adds new features on top of the 1.20 series and is
+part of the API and ABI-stable 1.x release series.
+
+Full release notes will soon be available at:
 
   https://gstreamer.freedesktop.org/releases/1.22/
 
@@ -51,6 +53,9 @@ with other GStreamer modules for a complete multimedia experience.
 
  - gst-editing-services: library an plugins for non-linear editing
 
+ - gst-plugins-rs: an exciting collection of well-maintained plugins written
+                   in the Rust programming language (usable from any language)
+
 ==== Download ====
 
 You can find source releases of gstreamer in the download
diff --git a/subprojects/gst-plugins-bad/gst-plugins-bad.doap b/subprojects/gst-plugins-bad/gst-plugins-bad.doap
index 5bd4e139fb..9bd6cd13b1 100644
--- a/subprojects/gst-plugins-bad/gst-plugins-bad.doap
+++ b/subprojects/gst-plugins-bad/gst-plugins-bad.doap
@@ -35,6 +35,16 @@ real live maintainer, or some actual wide use.
 
  <release>
   <Version>
+   <revision>1.21.90</revision>
+   <branch>main</branch>
+   <name></name>
+   <created>2023-01-13</created>
+   <file-release rdf:resource="https://gstreamer.freedesktop.org/src/gst-plugins-bad/gst-plugins-bad-1.21.90.tar.xz" />
+  </Version>
+ </release>
+
+ <release>
+  <Version>
    <revision>1.21.3</revision>
    <branch>main</branch>
    <name></name>
diff --git a/subprojects/gst-plugins-bad/meson.build b/subprojects/gst-plugins-bad/meson.build
index 4e584e970e..104e466914 100644
--- a/subprojects/gst-plugins-bad/meson.build
+++ b/subprojects/gst-plugins-bad/meson.build
@@ -1,5 +1,5 @@
 project('gst-plugins-bad', 'c', 'cpp',
-  version : '1.21.3.1',
+  version : '1.21.90',
   meson_version : '>= 0.62',
   default_options : [ 'warning_level=1',
                       'buildtype=debugoptimized' ])
diff --git a/subprojects/gst-plugins-base/NEWS b/subprojects/gst-plugins-base/NEWS
index cfa47b52e4..d801110ad8 100644
--- a/subprojects/gst-plugins-base/NEWS
+++ b/subprojects/gst-plugins-base/NEWS
@@ -1,28 +1,23 @@
 GStreamer 1.22 Release Notes
 
 GStreamer 1.22 has not been released yet. It is scheduled for release
-around the end of December 2022 / beginning of January 2023.
+around in January 2023.
 
 1.21.x is the unstable development version that is being developed in
 the git master branch and which will eventually result in 1.22, and
-1.21.3 is the current development release in that series
+1.21.90 is the first release candidate for 1.22 (rc1) in that series
 
 A feature freeze is now into effect for the 1.21 branch, but newly-added
 API might still change until the final 1.22.0 stable release, and minor
 features may also still be added until then.
 
-A first 1.22 release candidate (1.21.90) is expected towards
-mid-December, followed by more release candiates until the new 1.22
-stable release around the end of December 2022 / beginning of January
-2023.
-
 1.22 will be backwards-compatible to the stable 1.20, 1.18, 1.16, 1.14,
 1.12, 1.10, 1.8, 1.6,, 1.4, 1.2 and 1.0 release series.
 
 See https://gstreamer.freedesktop.org/releases/1.22/ for the latest
 version of this document.
 
-Last updated: Monday 5 December 2022, 01:00 UTC (log)
+Last updated: Thursday 12 January 2023, 15:00 UTC (log)
 
 Introduction
 
@@ -193,6 +188,13 @@ Build and Dependencies
 
 -   this section will be filled in in due course
 
+-   GLib >= 2.64 is now required (technically it still says >= 2.62 but
+    the plan is to bump that to 2.64 soon once some CI issues are sorted
+    out)
+
+-   libnice >= 0.1.21 is now required and contains important fixes for
+    GStreamer’s WebRTC stack.
+
 gst-build
 
 -   this section will be filled in in due course
@@ -241,6 +243,10 @@ Windows
 
 -   this section will be filled in in due course
 
+-   The Windows universal UWP build is currently non-functional and will
+    need updating after the recent GLib upgrade. It is unclear if anyone
+    is using these binaries, so if you are please make yourself known.
+
 Linux
 
 -   this section will be filled in in due course
@@ -253,6 +259,14 @@ Possibly Breaking Changes
 
 -   this section will be filled in in due course
 
+-   the Opus audio payloader and depayloader no longer accept the lower
+    case encoding-format=multiopus but instead produce and accept only
+    the upper case variant encoding-format=MULTIOPUS, since those should
+    always be upper case in GStreamer (caps fields are always case
+    sensitive). This should hopefully only affect applications where RTP
+    caps are set manually and multi-channel audio (>= 3 channels) is
+    used.
+
 Known Issues
 
 -   this section will be filled in in due course
@@ -323,7 +337,7 @@ the git 1.22 branch, which will be a stable branch.
 
 1.22.0
 
-1.22.0 is scheduled to be released around December 2022.
+1.22.0 is scheduled to be released in January 2023.
 
 Schedule for 1.24
 
diff --git a/subprojects/gst-plugins-base/RELEASE b/subprojects/gst-plugins-base/RELEASE
index ecba9e81a5..f02156b5da 100644
--- a/subprojects/gst-plugins-base/RELEASE
+++ b/subprojects/gst-plugins-base/RELEASE
@@ -1,13 +1,15 @@
-This is GStreamer gst-plugins-base 1.21.3.
+This is GStreamer gst-plugins-base 1.21.90.
 
-GStreamer 1.21 is the unstable development branch leading up to the next major
-stable version which will be 1.22.
+The GStreamer team is thrilled to announce a first release candidate of a new
+major feature release of your favourite cross-platform multimedia framework!
 
-The 1.21 development series adds new features on top of the 1.20 series and is
-part of the API and ABI-stable 1.x release series of the GStreamer multimedia
-framework.
+As always, this release is again packed with new features, bug fixes and
+other improvements.
 
-Full release notes will one day be found at:
+The 1.22 release series adds new features on top of the 1.20 series and is
+part of the API and ABI-stable 1.x release series.
+
+Full release notes will soon be available at:
 
   https://gstreamer.freedesktop.org/releases/1.22/
 
@@ -51,6 +53,9 @@ with other GStreamer modules for a complete multimedia experience.
 
  - gst-editing-services: library an plugins for non-linear editing
 
+ - gst-plugins-rs: an exciting collection of well-maintained plugins written
+                   in the Rust programming language (usable from any language)
+
 ==== Download ====
 
 You can find source releases of gstreamer in the download
diff --git a/subprojects/gst-plugins-base/gst-plugins-base.doap b/subprojects/gst-plugins-base/gst-plugins-base.doap
index 473158e654..49af932acd 100644
--- a/subprojects/gst-plugins-base/gst-plugins-base.doap
+++ b/subprojects/gst-plugins-base/gst-plugins-base.doap
@@ -36,6 +36,16 @@ A wide range of video and audio decoders, encoders, and filters are included.
 
  <release>
   <Version>
+   <revision>1.21.90</revision>
+   <branch>main</branch>
+   <name></name>
+   <created>2023-01-13</created>
+   <file-release rdf:resource="https://gstreamer.freedesktop.org/src/gst-plugins-base/gst-plugins-base-1.21.90.tar.xz" />
+  </Version>
+ </release>
+
+ <release>
+  <Version>
    <revision>1.21.3</revision>
    <branch>main</branch>
    <name></name>
diff --git a/subprojects/gst-plugins-base/meson.build b/subprojects/gst-plugins-base/meson.build
index 1529aa74e7..a41f37dc01 100644
--- a/subprojects/gst-plugins-base/meson.build
+++ b/subprojects/gst-plugins-base/meson.build
@@ -1,5 +1,5 @@
 project('gst-plugins-base', 'c',
-  version : '1.21.3.1',
+  version : '1.21.90',
   meson_version : '>= 0.62',
   default_options : [ 'warning_level=1',
                       'buildtype=debugoptimized' ])
diff --git a/subprojects/gst-plugins-good/NEWS b/subprojects/gst-plugins-good/NEWS
index cfa47b52e4..d801110ad8 100644
--- a/subprojects/gst-plugins-good/NEWS
+++ b/subprojects/gst-plugins-good/NEWS
@@ -1,28 +1,23 @@
 GStreamer 1.22 Release Notes
 
 GStreamer 1.22 has not been released yet. It is scheduled for release
-around the end of December 2022 / beginning of January 2023.
+around in January 2023.
 
 1.21.x is the unstable development version that is being developed in
 the git master branch and which will eventually result in 1.22, and
-1.21.3 is the current development release in that series
+1.21.90 is the first release candidate for 1.22 (rc1) in that series
 
 A feature freeze is now into effect for the 1.21 branch, but newly-added
 API might still change until the final 1.22.0 stable release, and minor
 features may also still be added until then.
 
-A first 1.22 release candidate (1.21.90) is expected towards
-mid-December, followed by more release candiates until the new 1.22
-stable release around the end of December 2022 / beginning of January
-2023.
-
 1.22 will be backwards-compatible to the stable 1.20, 1.18, 1.16, 1.14,
 1.12, 1.10, 1.8, 1.6,, 1.4, 1.2 and 1.0 release series.
 
 See https://gstreamer.freedesktop.org/releases/1.22/ for the latest
 version of this document.
 
-Last updated: Monday 5 December 2022, 01:00 UTC (log)
+Last updated: Thursday 12 January 2023, 15:00 UTC (log)
 
 Introduction
 
@@ -193,6 +188,13 @@ Build and Dependencies
 
 -   this section will be filled in in due course
 
+-   GLib >= 2.64 is now required (technically it still says >= 2.62 but
+    the plan is to bump that to 2.64 soon once some CI issues are sorted
+    out)
+
+-   libnice >= 0.1.21 is now required and contains important fixes for
+    GStreamer’s WebRTC stack.
+
 gst-build
 
 -   this section will be filled in in due course
@@ -241,6 +243,10 @@ Windows
 
 -   this section will be filled in in due course
 
+-   The Windows universal UWP build is currently non-functional and will
+    need updating after the recent GLib upgrade. It is unclear if anyone
+    is using these binaries, so if you are please make yourself known.
+
 Linux
 
 -   this section will be filled in in due course
@@ -253,6 +259,14 @@ Possibly Breaking Changes
 
 -   this section will be filled in in due course
 
+-   the Opus audio payloader and depayloader no longer accept the lower
+    case encoding-format=multiopus but instead produce and accept only
+    the upper case variant encoding-format=MULTIOPUS, since those should
+    always be upper case in GStreamer (caps fields are always case
+    sensitive). This should hopefully only affect applications where RTP
+    caps are set manually and multi-channel audio (>= 3 channels) is
+    used.
+
 Known Issues
 
 -   this section will be filled in in due course
@@ -323,7 +337,7 @@ the git 1.22 branch, which will be a stable branch.
 
 1.22.0
 
-1.22.0 is scheduled to be released around December 2022.
+1.22.0 is scheduled to be released in January 2023.
 
 Schedule for 1.24
 
diff --git a/subprojects/gst-plugins-good/RELEASE b/subprojects/gst-plugins-good/RELEASE
index 8999013a94..c324a1347d 100644
--- a/subprojects/gst-plugins-good/RELEASE
+++ b/subprojects/gst-plugins-good/RELEASE
@@ -1,13 +1,15 @@
-This is GStreamer gst-plugins-good 1.21.3.
+This is GStreamer gst-plugins-good 1.21.90.
 
-GStreamer 1.21 is the unstable development branch leading up to the next major
-stable version which will be 1.22.
+The GStreamer team is thrilled to announce a first release candidate of a new
+major feature release of your favourite cross-platform multimedia framework!
 
-The 1.21 development series adds new features on top of the 1.20 series and is
-part of the API and ABI-stable 1.x release series of the GStreamer multimedia
-framework.
+As always, this release is again packed with new features, bug fixes and
+other improvements.
 
-Full release notes will one day be found at:
+The 1.22 release series adds new features on top of the 1.20 series and is
+part of the API and ABI-stable 1.x release series.
+
+Full release notes will soon be available at:
 
   https://gstreamer.freedesktop.org/releases/1.22/
 
@@ -51,6 +53,9 @@ with other GStreamer modules for a complete multimedia experience.
 
  - gst-editing-services: library an plugins for non-linear editing
 
+ - gst-plugins-rs: an exciting collection of well-maintained plugins written
+                   in the Rust programming language (usable from any language)
+
 ==== Download ====
 
 You can find source releases of gstreamer in the download
diff --git a/subprojects/gst-plugins-good/docs/gst_plugins_cache.json b/subprojects/gst-plugins-good/docs/gst_plugins_cache.json
index 9baf233bb9..d7543f08fe 100644
--- a/subprojects/gst-plugins-good/docs/gst_plugins_cache.json
+++ b/subprojects/gst-plugins-good/docs/gst_plugins_cache.json
@@ -7027,7 +7027,7 @@
                         "construct": false,
                         "construct-only": false,
                         "controllable": false,
-                        "default": "GStreamer 1.21.3.1 FLV muxer",
+                        "default": "GStreamer 1.21.90 FLV muxer",
                         "mutable": "null",
                         "readable": true,
                         "type": "gchararray",
@@ -7039,7 +7039,7 @@
                         "construct": false,
                         "construct-only": false,
                         "controllable": false,
-                        "default": "GStreamer 1.21.3.1 FLV muxer",
+                        "default": "GStreamer 1.21.90 FLV muxer",
                         "mutable": "null",
                         "readable": true,
                         "type": "gchararray",
@@ -21257,7 +21257,7 @@
                         "construct": false,
                         "construct-only": false,
                         "controllable": false,
-                        "default": "GStreamer/1.21.3.1",
+                        "default": "GStreamer/1.21.90",
                         "mutable": "null",
                         "readable": true,
                         "type": "gchararray",
@@ -21816,7 +21816,7 @@
                         "construct": false,
                         "construct-only": false,
                         "controllable": false,
-                        "default": "GStreamer 1.21.3.1",
+                        "default": "GStreamer 1.21.90",
                         "mutable": "null",
                         "readable": true,
                         "type": "gchararray",
@@ -23253,7 +23253,7 @@
                         "construct": false,
                         "construct-only": false,
                         "controllable": false,
-                        "default": "GStreamer souphttpsrc 1.21.3.1 ",
+                        "default": "GStreamer souphttpsrc 1.21.90 ",
                         "mutable": "null",
                         "readable": true,
                         "type": "gchararray",
diff --git a/subprojects/gst-plugins-good/gst-plugins-good.doap b/subprojects/gst-plugins-good/gst-plugins-good.doap
index 3da31a80cb..d20bbb7a37 100644
--- a/subprojects/gst-plugins-good/gst-plugins-good.doap
+++ b/subprojects/gst-plugins-good/gst-plugins-good.doap
@@ -34,6 +34,16 @@ the plug-in code, LGPL or LGPL-compatible for the supporting library).
 
  <release>
   <Version>
+   <revision>1.21.90</revision>
+   <branch>main</branch>
+   <name></name>
+   <created>2023-01-13</created>
+   <file-release rdf:resource="https://gstreamer.freedesktop.org/src/gst-plugins-good/gst-plugins-good-1.21.90.tar.xz" />
+  </Version>
+ </release>
+
+ <release>
+  <Version>
    <revision>1.21.3</revision>
    <branch>main</branch>
    <name></name>
diff --git a/subprojects/gst-plugins-good/meson.build b/subprojects/gst-plugins-good/meson.build
index 1687899f71..fb189765fd 100644
--- a/subprojects/gst-plugins-good/meson.build
+++ b/subprojects/gst-plugins-good/meson.build
@@ -1,5 +1,5 @@
 project('gst-plugins-good', 'c',
-  version : '1.21.3.1',
+  version : '1.21.90',
   meson_version : '>= 0.62',
   default_options : [ 'warning_level=1',
                       'buildtype=debugoptimized' ])
diff --git a/subprojects/gst-plugins-rs.wrap b/subprojects/gst-plugins-rs.wrap
index f4d0b23f8d..e06bb45fb0 100644
--- a/subprojects/gst-plugins-rs.wrap
+++ b/subprojects/gst-plugins-rs.wrap
@@ -2,4 +2,4 @@
 directory=gst-plugins-rs
 url=https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs.git
 push-url=git@gitlab.freedesktop.org:gstreamer/gst-plugins-rs.git
-revision=0.9
+revision=gstreamer-1.21.90
diff --git a/subprojects/gst-plugins-ugly/NEWS b/subprojects/gst-plugins-ugly/NEWS
index cfa47b52e4..d801110ad8 100644
--- a/subprojects/gst-plugins-ugly/NEWS
+++ b/subprojects/gst-plugins-ugly/NEWS
@@ -1,28 +1,23 @@
 GStreamer 1.22 Release Notes
 
 GStreamer 1.22 has not been released yet. It is scheduled for release
-around the end of December 2022 / beginning of January 2023.
+around in January 2023.
 
 1.21.x is the unstable development version that is being developed in
 the git master branch and which will eventually result in 1.22, and
-1.21.3 is the current development release in that series
+1.21.90 is the first release candidate for 1.22 (rc1) in that series
 
 A feature freeze is now into effect for the 1.21 branch, but newly-added
 API might still change until the final 1.22.0 stable release, and minor
 features may also still be added until then.
 
-A first 1.22 release candidate (1.21.90) is expected towards
-mid-December, followed by more release candiates until the new 1.22
-stable release around the end of December 2022 / beginning of January
-2023.
-
 1.22 will be backwards-compatible to the stable 1.20, 1.18, 1.16, 1.14,
 1.12, 1.10, 1.8, 1.6,, 1.4, 1.2 and 1.0 release series.
 
 See https://gstreamer.freedesktop.org/releases/1.22/ for the latest
 version of this document.
 
-Last updated: Monday 5 December 2022, 01:00 UTC (log)
+Last updated: Thursday 12 January 2023, 15:00 UTC (log)
 
 Introduction
 
@@ -193,6 +188,13 @@ Build and Dependencies
 
 -   this section will be filled in in due course
 
+-   GLib >= 2.64 is now required (technically it still says >= 2.62 but
+    the plan is to bump that to 2.64 soon once some CI issues are sorted
+    out)
+
+-   libnice >= 0.1.21 is now required and contains important fixes for
+    GStreamer’s WebRTC stack.
+
 gst-build
 
 -   this section will be filled in in due course
@@ -241,6 +243,10 @@ Windows
 
 -   this section will be filled in in due course
 
+-   The Windows universal UWP build is currently non-functional and will
+    need updating after the recent GLib upgrade. It is unclear if anyone
+    is using these binaries, so if you are please make yourself known.
+
 Linux
 
 -   this section will be filled in in due course
@@ -253,6 +259,14 @@ Possibly Breaking Changes
 
 -   this section will be filled in in due course
 
+-   the Opus audio payloader and depayloader no longer accept the lower
+    case encoding-format=multiopus but instead produce and accept only
+    the upper case variant encoding-format=MULTIOPUS, since those should
+    always be upper case in GStreamer (caps fields are always case
+    sensitive). This should hopefully only affect applications where RTP
+    caps are set manually and multi-channel audio (>= 3 channels) is
+    used.
+
 Known Issues
 
 -   this section will be filled in in due course
@@ -323,7 +337,7 @@ the git 1.22 branch, which will be a stable branch.
 
 1.22.0
 
-1.22.0 is scheduled to be released around December 2022.
+1.22.0 is scheduled to be released in January 2023.
 
 Schedule for 1.24
 
diff --git a/subprojects/gst-plugins-ugly/RELEASE b/subprojects/gst-plugins-ugly/RELEASE
index 4809c7ec2a..f1b2421d48 100644
--- a/subprojects/gst-plugins-ugly/RELEASE
+++ b/subprojects/gst-plugins-ugly/RELEASE
@@ -1,13 +1,15 @@
-This is GStreamer gst-plugins-ugly 1.21.3.
+This is GStreamer gst-plugins-ugly 1.21.90.
 
-GStreamer 1.21 is the unstable development branch leading up to the next major
-stable version which will be 1.22.
+The GStreamer team is thrilled to announce a first release candidate of a new
+major feature release of your favourite cross-platform multimedia framework!
 
-The 1.21 development series adds new features on top of the 1.20 series and is
-part of the API and ABI-stable 1.x release series of the GStreamer multimedia
-framework.
+As always, this release is again packed with new features, bug fixes and
+other improvements.
 
-Full release notes will one day be found at:
+The 1.22 release series adds new features on top of the 1.20 series and is
+part of the API and ABI-stable 1.x release series.
+
+Full release notes will soon be available at:
 
   https://gstreamer.freedesktop.org/releases/1.22/
 
@@ -51,6 +53,9 @@ with other GStreamer modules for a complete multimedia experience.
 
  - gst-editing-services: library an plugins for non-linear editing
 
+ - gst-plugins-rs: an exciting collection of well-maintained plugins written
+                   in the Rust programming language (usable from any language)
+
 ==== Download ====
 
 You can find source releases of gstreamer in the download
diff --git a/subprojects/gst-plugins-ugly/gst-plugins-ugly.doap b/subprojects/gst-plugins-ugly/gst-plugins-ugly.doap
index bc1074f351..2c53ddc864 100644
--- a/subprojects/gst-plugins-ugly/gst-plugins-ugly.doap
+++ b/subprojects/gst-plugins-ugly/gst-plugins-ugly.doap
@@ -35,6 +35,16 @@ might be widely known to present patent problems.
 
  <release>
   <Version>
+   <revision>1.21.90</revision>
+   <branch>main</branch>
+   <name></name>
+   <created>2023-01-13</created>
+   <file-release rdf:resource="https://gstreamer.freedesktop.org/src/gst-plugins-ugly/gst-plugins-ugly-1.21.90.tar.xz" />
+  </Version>
+ </release>
+
+ <release>
+  <Version>
    <revision>1.21.3</revision>
    <branch>main</branch>
    <name></name>
diff --git a/subprojects/gst-plugins-ugly/meson.build b/subprojects/gst-plugins-ugly/meson.build
index 8222990e25..82cf32dac5 100644
--- a/subprojects/gst-plugins-ugly/meson.build
+++ b/subprojects/gst-plugins-ugly/meson.build
@@ -1,5 +1,5 @@
 project('gst-plugins-ugly', 'c',
-  version : '1.21.3.1',
+  version : '1.21.90',
   meson_version : '>= 0.62',
   default_options : [ 'warning_level=1',
                       'buildtype=debugoptimized' ])
diff --git a/subprojects/gst-python/NEWS b/subprojects/gst-python/NEWS
index cfa47b52e4..d801110ad8 100644
--- a/subprojects/gst-python/NEWS
+++ b/subprojects/gst-python/NEWS
@@ -1,28 +1,23 @@
 GStreamer 1.22 Release Notes
 
 GStreamer 1.22 has not been released yet. It is scheduled for release
-around the end of December 2022 / beginning of January 2023.
+around in January 2023.
 
 1.21.x is the unstable development version that is being developed in
 the git master branch and which will eventually result in 1.22, and
-1.21.3 is the current development release in that series
+1.21.90 is the first release candidate for 1.22 (rc1) in that series
 
 A feature freeze is now into effect for the 1.21 branch, but newly-added
 API might still change until the final 1.22.0 stable release, and minor
 features may also still be added until then.
 
-A first 1.22 release candidate (1.21.90) is expected towards
-mid-December, followed by more release candiates until the new 1.22
-stable release around the end of December 2022 / beginning of January
-2023.
-
 1.22 will be backwards-compatible to the stable 1.20, 1.18, 1.16, 1.14,
 1.12, 1.10, 1.8, 1.6,, 1.4, 1.2 and 1.0 release series.
 
 See https://gstreamer.freedesktop.org/releases/1.22/ for the latest
 version of this document.
 
-Last updated: Monday 5 December 2022, 01:00 UTC (log)
+Last updated: Thursday 12 January 2023, 15:00 UTC (log)
 
 Introduction
 
@@ -193,6 +188,13 @@ Build and Dependencies
 
 -   this section will be filled in in due course
 
+-   GLib >= 2.64 is now required (technically it still says >= 2.62 but
+    the plan is to bump that to 2.64 soon once some CI issues are sorted
+    out)
+
+-   libnice >= 0.1.21 is now required and contains important fixes for
+    GStreamer’s WebRTC stack.
+
 gst-build
 
 -   this section will be filled in in due course
@@ -241,6 +243,10 @@ Windows
 
 -   this section will be filled in in due course
 
+-   The Windows universal UWP build is currently non-functional and will
+    need updating after the recent GLib upgrade. It is unclear if anyone
+    is using these binaries, so if you are please make yourself known.
+
 Linux
 
 -   this section will be filled in in due course
@@ -253,6 +259,14 @@ Possibly Breaking Changes
 
 -   this section will be filled in in due course
 
+-   the Opus audio payloader and depayloader no longer accept the lower
+    case encoding-format=multiopus but instead produce and accept only
+    the upper case variant encoding-format=MULTIOPUS, since those should
+    always be upper case in GStreamer (caps fields are always case
+    sensitive). This should hopefully only affect applications where RTP
+    caps are set manually and multi-channel audio (>= 3 channels) is
+    used.
+
 Known Issues
 
 -   this section will be filled in in due course
@@ -323,7 +337,7 @@ the git 1.22 branch, which will be a stable branch.
 
 1.22.0
 
-1.22.0 is scheduled to be released around December 2022.
+1.22.0 is scheduled to be released in January 2023.
 
 Schedule for 1.24
 
diff --git a/subprojects/gst-python/RELEASE b/subprojects/gst-python/RELEASE
index f7bfbc127f..23366eef38 100644
--- a/subprojects/gst-python/RELEASE
+++ b/subprojects/gst-python/RELEASE
@@ -1,13 +1,15 @@
-This is GStreamer gst-python 1.21.3.
+This is GStreamer gst-python 1.21.90.
 
-GStreamer 1.21 is the unstable development branch leading up to the next major
-stable version which will be 1.22.
+The GStreamer team is thrilled to announce a first release candidate of a new
+major feature release of your favourite cross-platform multimedia framework!
 
-The 1.21 development series adds new features on top of the 1.20 series and is
-part of the API and ABI-stable 1.x release series of the GStreamer multimedia
-framework.
+As always, this release is again packed with new features, bug fixes and
+other improvements.
 
-Full release notes will one day be found at:
+The 1.22 release series adds new features on top of the 1.20 series and is
+part of the API and ABI-stable 1.x release series.
+
+Full release notes will soon be available at:
 
   https://gstreamer.freedesktop.org/releases/1.22/
 
@@ -51,6 +53,9 @@ with other GStreamer modules for a complete multimedia experience.
 
  - gst-editing-services: library an plugins for non-linear editing
 
+ - gst-plugins-rs: an exciting collection of well-maintained plugins written
+                   in the Rust programming language (usable from any language)
+
 ==== Download ====
 
 You can find source releases of gstreamer in the download
diff --git a/subprojects/gst-python/gst-python.doap b/subprojects/gst-python/gst-python.doap
index 8d20fbc6ba..d28f4c0cba 100644
--- a/subprojects/gst-python/gst-python.doap
+++ b/subprojects/gst-python/gst-python.doap
@@ -32,6 +32,16 @@ GStreamer Python Bindings is a set of overrides and Gst fundamental types handli
 
  <release>
   <Version>
+   <revision>1.21.90</revision>
+   <branch>main</branch>
+   <name></name>
+   <created>2023-01-13</created>
+   <file-release rdf:resource="https://gstreamer.freedesktop.org/src/gst-python/gst-python-1.21.90.tar.xz" />
+  </Version>
+ </release>
+
+ <release>
+  <Version>
    <revision>1.21.3</revision>
    <branch>main</branch>
    <name></name>
diff --git a/subprojects/gst-python/meson.build b/subprojects/gst-python/meson.build
index 1f7e39da19..336065d6cc 100644
--- a/subprojects/gst-python/meson.build
+++ b/subprojects/gst-python/meson.build
@@ -1,5 +1,5 @@
 project('gst-python', 'c',
-  version : '1.21.3.1',
+  version : '1.21.90',
   meson_version : '>= 0.62',
   default_options : [ 'warning_level=1',
                       'c_std=gnu99',
diff --git a/subprojects/gst-rtsp-server/NEWS b/subprojects/gst-rtsp-server/NEWS
index cfa47b52e4..d801110ad8 100644
--- a/subprojects/gst-rtsp-server/NEWS
+++ b/subprojects/gst-rtsp-server/NEWS
@@ -1,28 +1,23 @@
 GStreamer 1.22 Release Notes
 
 GStreamer 1.22 has not been released yet. It is scheduled for release
-around the end of December 2022 / beginning of January 2023.
+around in January 2023.
 
 1.21.x is the unstable development version that is being developed in
 the git master branch and which will eventually result in 1.22, and
-1.21.3 is the current development release in that series
+1.21.90 is the first release candidate for 1.22 (rc1) in that series
 
 A feature freeze is now into effect for the 1.21 branch, but newly-added
 API might still change until the final 1.22.0 stable release, and minor
 features may also still be added until then.
 
-A first 1.22 release candidate (1.21.90) is expected towards
-mid-December, followed by more release candiates until the new 1.22
-stable release around the end of December 2022 / beginning of January
-2023.
-
 1.22 will be backwards-compatible to the stable 1.20, 1.18, 1.16, 1.14,
 1.12, 1.10, 1.8, 1.6,, 1.4, 1.2 and 1.0 release series.
 
 See https://gstreamer.freedesktop.org/releases/1.22/ for the latest
 version of this document.
 
-Last updated: Monday 5 December 2022, 01:00 UTC (log)
+Last updated: Thursday 12 January 2023, 15:00 UTC (log)
 
 Introduction
 
@@ -193,6 +188,13 @@ Build and Dependencies
 
 -   this section will be filled in in due course
 
+-   GLib >= 2.64 is now required (technically it still says >= 2.62 but
+    the plan is to bump that to 2.64 soon once some CI issues are sorted
+    out)
+
+-   libnice >= 0.1.21 is now required and contains important fixes for
+    GStreamer’s WebRTC stack.
+
 gst-build
 
 -   this section will be filled in in due course
@@ -241,6 +243,10 @@ Windows
 
 -   this section will be filled in in due course
 
+-   The Windows universal UWP build is currently non-functional and will
+    need updating after the recent GLib upgrade. It is unclear if anyone
+    is using these binaries, so if you are please make yourself known.
+
 Linux
 
 -   this section will be filled in in due course
@@ -253,6 +259,14 @@ Possibly Breaking Changes
 
 -   this section will be filled in in due course
 
+-   the Opus audio payloader and depayloader no longer accept the lower
+    case encoding-format=multiopus but instead produce and accept only
+    the upper case variant encoding-format=MULTIOPUS, since those should
+    always be upper case in GStreamer (caps fields are always case
+    sensitive). This should hopefully only affect applications where RTP
+    caps are set manually and multi-channel audio (>= 3 channels) is
+    used.
+
 Known Issues
 
 -   this section will be filled in in due course
@@ -323,7 +337,7 @@ the git 1.22 branch, which will be a stable branch.
 
 1.22.0
 
-1.22.0 is scheduled to be released around December 2022.
+1.22.0 is scheduled to be released in January 2023.
 
 Schedule for 1.24
 
diff --git a/subprojects/gst-rtsp-server/RELEASE b/subprojects/gst-rtsp-server/RELEASE
index 335f284121..e5c9390ca0 100644
--- a/subprojects/gst-rtsp-server/RELEASE
+++ b/subprojects/gst-rtsp-server/RELEASE
@@ -1,13 +1,15 @@
-This is GStreamer gst-rtsp-server 1.21.3.
+This is GStreamer gst-rtsp-server 1.21.90.
 
-GStreamer 1.21 is the unstable development branch leading up to the next major
-stable version which will be 1.22.
+The GStreamer team is thrilled to announce a first release candidate of a new
+major feature release of your favourite cross-platform multimedia framework!
 
-The 1.21 development series adds new features on top of the 1.20 series and is
-part of the API and ABI-stable 1.x release series of the GStreamer multimedia
-framework.
+As always, this release is again packed with new features, bug fixes and
+other improvements.
 
-Full release notes will one day be found at:
+The 1.22 release series adds new features on top of the 1.20 series and is
+part of the API and ABI-stable 1.x release series.
+
+Full release notes will soon be available at:
 
   https://gstreamer.freedesktop.org/releases/1.22/
 
@@ -51,6 +53,9 @@ with other GStreamer modules for a complete multimedia experience.
 
  - gst-editing-services: library an plugins for non-linear editing
 
+ - gst-plugins-rs: an exciting collection of well-maintained plugins written
+                   in the Rust programming language (usable from any language)
+
 ==== Download ====
 
 You can find source releases of gstreamer in the download
diff --git a/subprojects/gst-rtsp-server/docs/plugins/gst_plugins_cache.json b/subprojects/gst-rtsp-server/docs/plugins/gst_plugins_cache.json
index 490b10f914..78a15e280f 100644
--- a/subprojects/gst-rtsp-server/docs/plugins/gst_plugins_cache.json
+++ b/subprojects/gst-rtsp-server/docs/plugins/gst_plugins_cache.json
@@ -333,7 +333,7 @@
                         "construct": false,
                         "construct-only": false,
                         "controllable": false,
-                        "default": "GStreamer/1.21.3.1",
+                        "default": "GStreamer/1.21.90",
                         "mutable": "null",
                         "readable": true,
                         "type": "gchararray",
diff --git a/subprojects/gst-rtsp-server/gst-rtsp-server.doap b/subprojects/gst-rtsp-server/gst-rtsp-server.doap
index ca0ae04654..71b8f34b94 100644
--- a/subprojects/gst-rtsp-server/gst-rtsp-server.doap
+++ b/subprojects/gst-rtsp-server/gst-rtsp-server.doap
@@ -32,6 +32,16 @@ RTSP server library based on GStreamer
 
  <release>
   <Version>
+   <revision>1.21.90</revision>
+   <branch>main</branch>
+   <name></name>
+   <created>2023-01-13</created>
+   <file-release rdf:resource="https://gstreamer.freedesktop.org/src/gst-rtsp-server/gst-rtsp-server-1.21.90.tar.xz" />
+  </Version>
+ </release>
+
+ <release>
+  <Version>
    <revision>1.21.3</revision>
    <branch>main</branch>
    <name></name>
diff --git a/subprojects/gst-rtsp-server/meson.build b/subprojects/gst-rtsp-server/meson.build
index 152b67813a..2c4e8f86d2 100644
--- a/subprojects/gst-rtsp-server/meson.build
+++ b/subprojects/gst-rtsp-server/meson.build
@@ -1,5 +1,5 @@
 project('gst-rtsp-server', 'c',
-  version : '1.21.3.1',
+  version : '1.21.90',
   meson_version : '>= 0.62',
   default_options : ['warning_level=1', 'buildtype=debugoptimized'])
 
diff --git a/subprojects/gstreamer-sharp/meson.build b/subprojects/gstreamer-sharp/meson.build
index f1a93c915f..276f2d5748 100644
--- a/subprojects/gstreamer-sharp/meson.build
+++ b/subprojects/gstreamer-sharp/meson.build
@@ -1,4 +1,4 @@
-project('gstreamer-sharp', ['cs', 'c'], version: '1.21.3.1',
+project('gstreamer-sharp', ['cs', 'c'], version: '1.21.90',
     meson_version : '>= 0.62', license: 'LGPL')
 
 if host_machine.system() == 'osx'
diff --git a/subprojects/gstreamer-sharp/sources/generated/Gst.PbUtils/Constants.cs b/subprojects/gstreamer-sharp/sources/generated/Gst.PbUtils/Constants.cs
index 29bb3d6e81..500f3de8cd 100644
--- a/subprojects/gstreamer-sharp/sources/generated/Gst.PbUtils/Constants.cs
+++ b/subprojects/gstreamer-sharp/sources/generated/Gst.PbUtils/Constants.cs
@@ -17,9 +17,9 @@ namespace Gst.PbUtils {
 		public const string ENCODING_CATEGORY_ONLINE_SERVICE = @"online-service";
 		public const string ENCODING_CATEGORY_STORAGE_EDITING = @"storage-editing";
 		public const int PLUGINS_BASE_VERSION_MAJOR = 1;
-		public const int PLUGINS_BASE_VERSION_MICRO = 3;
+		public const int PLUGINS_BASE_VERSION_MICRO = 90;
 		public const int PLUGINS_BASE_VERSION_MINOR = 21;
-		public const int PLUGINS_BASE_VERSION_NANO = 1;
+		public const int PLUGINS_BASE_VERSION_NANO = 0;
 #endregion
 	}
 }
diff --git a/subprojects/gstreamer-sharp/sources/generated/Gst/Constants.cs b/subprojects/gstreamer-sharp/sources/generated/Gst/Constants.cs
index 73767885ca..796b801f87 100644
--- a/subprojects/gstreamer-sharp/sources/generated/Gst/Constants.cs
+++ b/subprojects/gstreamer-sharp/sources/generated/Gst/Constants.cs
@@ -170,9 +170,9 @@ namespace Gst {
 		public const int VALUE_LESS_THAN = -1;
 		public const int VALUE_UNORDERED = 2;
 		public const int VERSION_MAJOR = 1;
-		public const int VERSION_MICRO = 3;
+		public const int VERSION_MICRO = 90;
 		public const int VERSION_MINOR = 21;
-		public const int VERSION_NANO = 1;
+		public const int VERSION_NANO = 0;
 #endregion
 	}
 }
diff --git a/subprojects/gstreamer-sharp/sources/generated/gstreamer-sharp-api.xml b/subprojects/gstreamer-sharp/sources/generated/gstreamer-sharp-api.xml
index a7d717e460..62d395174d 100644
--- a/subprojects/gstreamer-sharp/sources/generated/gstreamer-sharp-api.xml
+++ b/subprojects/gstreamer-sharp/sources/generated/gstreamer-sharp-api.xml
@@ -12127,10 +12127,10 @@
       <constant value="1" ctype="gint" gtype="gint" name="VALUE_GREATER_THAN" />
       <constant value="-1" ctype="gint" gtype="gint" name="VALUE_LESS_THAN" />
       <constant value="2" ctype="gint" gtype="gint" name="VALUE_UNORDERED" />
-      <constant value="1" ctype="gint" gtype="gint"            name="VERSION_MAJOR" />
-      <constant value="3" ctype="gint" gtype="gint"            name="VERSION_MICRO" />
-      <constant value="21" ctype="gint" gtype="gint"            name="VERSION_MINOR" />
-      <constant value="1" ctype="gint" gtype="gint"            name="VERSION_NANO" />
+      <constant value="1" ctype="gint" gtype="gint"             name="VERSION_MAJOR" />
+      <constant value="90" ctype="gint" gtype="gint"             name="VERSION_MICRO" />
+      <constant value="21" ctype="gint" gtype="gint"             name="VERSION_MINOR" />
+      <constant value="0" ctype="gint" gtype="gint"             name="VERSION_NANO" />
     </object>
     <class name="Parse" cname="GstParse" disable_void_ctor="1">
       <method name="ParseBinFromDescription" cname="gst_parse_bin_from_description" shared="true">
@@ -21582,10 +21582,10 @@
       <constant value="file-extension" ctype="gchar*" gtype="gchar*" name="ENCODING_CATEGORY_FILE_EXTENSION" />
       <constant value="online-service" ctype="gchar*" gtype="gchar*" name="ENCODING_CATEGORY_ONLINE_SERVICE" />
       <constant value="storage-editing" ctype="gchar*" gtype="gchar*" name="ENCODING_CATEGORY_STORAGE_EDITING" />
-      <constant value="1" ctype="gint" gtype="gint"            name="PLUGINS_BASE_VERSION_MAJOR" />
-      <constant value="3" ctype="gint" gtype="gint"            name="PLUGINS_BASE_VERSION_MICRO" />
-      <constant value="21" ctype="gint" gtype="gint"            name="PLUGINS_BASE_VERSION_MINOR" />
-      <constant value="1" ctype="gint" gtype="gint"            name="PLUGINS_BASE_VERSION_NANO" />
+      <constant value="1" ctype="gint" gtype="gint"             name="PLUGINS_BASE_VERSION_MAJOR" />
+      <constant value="90" ctype="gint" gtype="gint"             name="PLUGINS_BASE_VERSION_MICRO" />
+      <constant value="21" ctype="gint" gtype="gint"             name="PLUGINS_BASE_VERSION_MINOR" />
+      <constant value="0" ctype="gint" gtype="gint"             name="PLUGINS_BASE_VERSION_NANO" />
     </object>
   </namespace>
   <namespace name="Gst.Rtp" library="gstrtp-1.0-0.dll">
diff --git a/subprojects/gstreamer-vaapi/NEWS b/subprojects/gstreamer-vaapi/NEWS
index cfa47b52e4..d801110ad8 100644
--- a/subprojects/gstreamer-vaapi/NEWS
+++ b/subprojects/gstreamer-vaapi/NEWS
@@ -1,28 +1,23 @@
 GStreamer 1.22 Release Notes
 
 GStreamer 1.22 has not been released yet. It is scheduled for release
-around the end of December 2022 / beginning of January 2023.
+around in January 2023.
 
 1.21.x is the unstable development version that is being developed in
 the git master branch and which will eventually result in 1.22, and
-1.21.3 is the current development release in that series
+1.21.90 is the first release candidate for 1.22 (rc1) in that series
 
 A feature freeze is now into effect for the 1.21 branch, but newly-added
 API might still change until the final 1.22.0 stable release, and minor
 features may also still be added until then.
 
-A first 1.22 release candidate (1.21.90) is expected towards
-mid-December, followed by more release candiates until the new 1.22
-stable release around the end of December 2022 / beginning of January
-2023.
-
 1.22 will be backwards-compatible to the stable 1.20, 1.18, 1.16, 1.14,
 1.12, 1.10, 1.8, 1.6,, 1.4, 1.2 and 1.0 release series.
 
 See https://gstreamer.freedesktop.org/releases/1.22/ for the latest
 version of this document.
 
-Last updated: Monday 5 December 2022, 01:00 UTC (log)
+Last updated: Thursday 12 January 2023, 15:00 UTC (log)
 
 Introduction
 
@@ -193,6 +188,13 @@ Build and Dependencies
 
 -   this section will be filled in in due course
 
+-   GLib >= 2.64 is now required (technically it still says >= 2.62 but
+    the plan is to bump that to 2.64 soon once some CI issues are sorted
+    out)
+
+-   libnice >= 0.1.21 is now required and contains important fixes for
+    GStreamer’s WebRTC stack.
+
 gst-build
 
 -   this section will be filled in in due course
@@ -241,6 +243,10 @@ Windows
 
 -   this section will be filled in in due course
 
+-   The Windows universal UWP build is currently non-functional and will
+    need updating after the recent GLib upgrade. It is unclear if anyone
+    is using these binaries, so if you are please make yourself known.
+
 Linux
 
 -   this section will be filled in in due course
@@ -253,6 +259,14 @@ Possibly Breaking Changes
 
 -   this section will be filled in in due course
 
+-   the Opus audio payloader and depayloader no longer accept the lower
+    case encoding-format=multiopus but instead produce and accept only
+    the upper case variant encoding-format=MULTIOPUS, since those should
+    always be upper case in GStreamer (caps fields are always case
+    sensitive). This should hopefully only affect applications where RTP
+    caps are set manually and multi-channel audio (>= 3 channels) is
+    used.
+
 Known Issues
 
 -   this section will be filled in in due course
@@ -323,7 +337,7 @@ the git 1.22 branch, which will be a stable branch.
 
 1.22.0
 
-1.22.0 is scheduled to be released around December 2022.
+1.22.0 is scheduled to be released in January 2023.
 
 Schedule for 1.24
 
diff --git a/subprojects/gstreamer-vaapi/RELEASE b/subprojects/gstreamer-vaapi/RELEASE
index 8760f14579..bfd25b2a54 100644
--- a/subprojects/gstreamer-vaapi/RELEASE
+++ b/subprojects/gstreamer-vaapi/RELEASE
@@ -1,13 +1,15 @@
-This is GStreamer gstreamer-vaapi 1.21.3.
+This is GStreamer gstreamer-vaapi 1.21.90.
 
-GStreamer 1.21 is the unstable development branch leading up to the next major
-stable version which will be 1.22.
+The GStreamer team is thrilled to announce a first release candidate of a new
+major feature release of your favourite cross-platform multimedia framework!
 
-The 1.21 development series adds new features on top of the 1.20 series and is
-part of the API and ABI-stable 1.x release series of the GStreamer multimedia
-framework.
+As always, this release is again packed with new features, bug fixes and
+other improvements.
 
-Full release notes will one day be found at:
+The 1.22 release series adds new features on top of the 1.20 series and is
+part of the API and ABI-stable 1.x release series.
+
+Full release notes will soon be available at:
 
   https://gstreamer.freedesktop.org/releases/1.22/
 
@@ -51,6 +53,9 @@ with other GStreamer modules for a complete multimedia experience.
 
  - gst-editing-services: library an plugins for non-linear editing
 
+ - gst-plugins-rs: an exciting collection of well-maintained plugins written
+                   in the Rust programming language (usable from any language)
+
 ==== Download ====
 
 You can find source releases of gstreamer in the download
diff --git a/subprojects/gstreamer-vaapi/gstreamer-vaapi.doap b/subprojects/gstreamer-vaapi/gstreamer-vaapi.doap
index b638780434..1a8d35e736 100644
--- a/subprojects/gstreamer-vaapi/gstreamer-vaapi.doap
+++ b/subprojects/gstreamer-vaapi/gstreamer-vaapi.doap
@@ -27,6 +27,16 @@
 
  <release>
   <Version>
+   <revision>1.21.90</revision>
+   <branch>main</branch>
+   <name></name>
+   <created>2023-01-13</created>
+   <file-release rdf:resource="https://gstreamer.freedesktop.org/src/gstreamer-vaapi/gstreamer-vaapi-1.21.90.tar.xz" />
+  </Version>
+ </release>
+
+ <release>
+  <Version>
    <revision>1.21.3</revision>
    <branch>main</branch>
    <name></name>
diff --git a/subprojects/gstreamer-vaapi/meson.build b/subprojects/gstreamer-vaapi/meson.build
index f890ad0d3b..22bdc8f82e 100644
--- a/subprojects/gstreamer-vaapi/meson.build
+++ b/subprojects/gstreamer-vaapi/meson.build
@@ -1,5 +1,5 @@
 project('gstreamer-vaapi', 'c',
-  version : '1.21.3.1',
+  version : '1.21.90',
   meson_version : '>= 0.62',
   default_options : [ 'warning_level=1',
                       'buildtype=debugoptimized' ])
diff --git a/subprojects/gstreamer/NEWS b/subprojects/gstreamer/NEWS
index cfa47b52e4..d801110ad8 100644
--- a/subprojects/gstreamer/NEWS
+++ b/subprojects/gstreamer/NEWS
@@ -1,28 +1,23 @@
 GStreamer 1.22 Release Notes
 
 GStreamer 1.22 has not been released yet. It is scheduled for release
-around the end of December 2022 / beginning of January 2023.
+around in January 2023.
 
 1.21.x is the unstable development version that is being developed in
 the git master branch and which will eventually result in 1.22, and
-1.21.3 is the current development release in that series
+1.21.90 is the first release candidate for 1.22 (rc1) in that series
 
 A feature freeze is now into effect for the 1.21 branch, but newly-added
 API might still change until the final 1.22.0 stable release, and minor
 features may also still be added until then.
 
-A first 1.22 release candidate (1.21.90) is expected towards
-mid-December, followed by more release candiates until the new 1.22
-stable release around the end of December 2022 / beginning of January
-2023.
-
 1.22 will be backwards-compatible to the stable 1.20, 1.18, 1.16, 1.14,
 1.12, 1.10, 1.8, 1.6,, 1.4, 1.2 and 1.0 release series.
 
 See https://gstreamer.freedesktop.org/releases/1.22/ for the latest
 version of this document.
 
-Last updated: Monday 5 December 2022, 01:00 UTC (log)
+Last updated: Thursday 12 January 2023, 15:00 UTC (log)
 
 Introduction
 
@@ -193,6 +188,13 @@ Build and Dependencies
 
 -   this section will be filled in in due course
 
+-   GLib >= 2.64 is now required (technically it still says >= 2.62 but
+    the plan is to bump that to 2.64 soon once some CI issues are sorted
+    out)
+
+-   libnice >= 0.1.21 is now required and contains important fixes for
+    GStreamer’s WebRTC stack.
+
 gst-build
 
 -   this section will be filled in in due course
@@ -241,6 +243,10 @@ Windows
 
 -   this section will be filled in in due course
 
+-   The Windows universal UWP build is currently non-functional and will
+    need updating after the recent GLib upgrade. It is unclear if anyone
+    is using these binaries, so if you are please make yourself known.
+
 Linux
 
 -   this section will be filled in in due course
@@ -253,6 +259,14 @@ Possibly Breaking Changes
 
 -   this section will be filled in in due course
 
+-   the Opus audio payloader and depayloader no longer accept the lower
+    case encoding-format=multiopus but instead produce and accept only
+    the upper case variant encoding-format=MULTIOPUS, since those should
+    always be upper case in GStreamer (caps fields are always case
+    sensitive). This should hopefully only affect applications where RTP
+    caps are set manually and multi-channel audio (>= 3 channels) is
+    used.
+
 Known Issues
 
 -   this section will be filled in in due course
@@ -323,7 +337,7 @@ the git 1.22 branch, which will be a stable branch.
 
 1.22.0
 
-1.22.0 is scheduled to be released around December 2022.
+1.22.0 is scheduled to be released in January 2023.
 
 Schedule for 1.24
 
diff --git a/subprojects/gstreamer/RELEASE b/subprojects/gstreamer/RELEASE
index 5453ac149e..2c90c4ec8e 100644
--- a/subprojects/gstreamer/RELEASE
+++ b/subprojects/gstreamer/RELEASE
@@ -1,13 +1,15 @@
-This is GStreamer core 1.21.3.
+This is GStreamer core 1.21.90.
 
-GStreamer 1.21 is the unstable development branch leading up to the next major
-stable version which will be 1.22.
+The GStreamer team is thrilled to announce a first release candidate of a new
+major feature release of your favourite cross-platform multimedia framework!
 
-The 1.21 development series adds new features on top of the 1.20 series and is
-part of the API and ABI-stable 1.x release series of the GStreamer multimedia
-framework.
+As always, this release is again packed with new features, bug fixes and
+other improvements.
 
-Full release notes will one day be found at:
+The 1.22 release series adds new features on top of the 1.20 series and is
+part of the API and ABI-stable 1.x release series.
+
+Full release notes will soon be available at:
 
   https://gstreamer.freedesktop.org/releases/1.22/
 
@@ -51,6 +53,9 @@ with other GStreamer modules for a complete multimedia experience.
 
  - gst-editing-services: library an plugins for non-linear editing
 
+ - gst-plugins-rs: an exciting collection of well-maintained plugins written
+                   in the Rust programming language (usable from any language)
+
 ==== Download ====
 
 You can find source releases of gstreamer in the download
diff --git a/subprojects/gstreamer/gstreamer.doap b/subprojects/gstreamer/gstreamer.doap
index 2c27e9f279..2efcae73b8 100644
--- a/subprojects/gstreamer/gstreamer.doap
+++ b/subprojects/gstreamer/gstreamer.doap
@@ -40,6 +40,16 @@ hierarchy, and a set of media-agnostic core elements.
 
  <release>
   <Version>
+   <revision>1.21.90</revision>
+   <branch>main</branch>
+   <name></name>
+   <created>2023-01-13</created>
+   <file-release rdf:resource="https://gstreamer.freedesktop.org/src/gstreamer/gstreamer-1.21.90.tar.xz" />
+  </Version>
+ </release>
+
+ <release>
+  <Version>
    <revision>1.21.3</revision>
    <branch>main</branch>
    <name></name>
diff --git a/subprojects/gstreamer/meson.build b/subprojects/gstreamer/meson.build
index f6ea86c18a..a9973d355c 100644
--- a/subprojects/gstreamer/meson.build
+++ b/subprojects/gstreamer/meson.build
@@ -1,5 +1,5 @@
 project('gstreamer', 'c',
-  version : '1.21.3.1',
+  version : '1.21.90',
   meson_version : '>= 0.62',
   default_options : [ 'warning_level=1',
                       'buildtype=debugoptimized' ])