maint: post-release administrivia

* NEWS: Add header line for next release.
* .prev-version: Record previous version.
* cfg.mk (old_NEWS_hash): Auto-update.

3 files changed, 5 insertions, 2 deletions

diff --git a/.prev-version b/.prev-version
index bd28b9c5..c8cfe395 100644
--- a/.prev-version
+++ b/.prev-version
@@ -1 +1 @@
-3.9
+3.10
diff --git a/NEWS b/NEWS
index 96487d8a..400c2566 100644
--- a/NEWS
+++ b/NEWS
@@ -1,5 +1,8 @@
 GNU grep NEWS                                    -*- outline -*-
 
+* Noteworthy changes in release ?.? (????-??-??) [?]
+
+
 * Noteworthy changes in release 3.10 (2023-03-22) [stable]
 
 ** Bug fixes
diff --git a/cfg.mk b/cfg.mk
index 66421769..8d7a6f76 100644
--- a/cfg.mk
+++ b/cfg.mk
@@ -68,7 +68,7 @@ export VERBOSE = yes
 # 1127556 9e
 export XZ_OPT = -6e
 
-old_NEWS_hash = cfaf2cc980f8b40c42c45f2fa7d764f2
+old_NEWS_hash = acc0cb77b06cc80cd3d8811590cdd5f0
 
 # We prefer to spell it back-reference, as POSIX does.
 sc_prohibit_backref: