Create new perldelta for 5.33.4

11 files changed, 604 insertions, 155 deletions

diff --git a/MANIFEST b/MANIFEST
index 03addf3735..de855c331b 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -5210,6 +5210,7 @@ pod/perl5320delta.pod		Perl changes in version 5.32.0
 pod/perl5330delta.pod		Perl changes in version 5.33.0
 pod/perl5331delta.pod		Perl changes in version 5.33.1
 pod/perl5332delta.pod		Perl changes in version 5.33.2
+pod/perl5333delta.pod		Perl changes in version 5.33.3
 pod/perl561delta.pod		Perl changes in version 5.6.1
 pod/perl56delta.pod		Perl changes in version 5.6
 pod/perl581delta.pod		Perl changes in version 5.8.1
diff --git a/Makefile.SH b/Makefile.SH
index e74f44764b..1c40b75aba 100755
--- a/Makefile.SH
+++ b/Makefile.SH
@@ -589,7 +589,7 @@ esac
 
 $spitshell >>$Makefile <<'!NO!SUBS!'
 
-perltoc_pod_prereqs = extra.pods pod/perl5333delta.pod pod/perlapi.pod pod/perlintern.pod pod/perlmodlib.pod pod/perluniprops.pod
+perltoc_pod_prereqs = extra.pods pod/perl5334delta.pod pod/perlapi.pod pod/perlintern.pod pod/perlmodlib.pod pod/perluniprops.pod
 generated_pods = pod/perltoc.pod $(perltoc_pod_prereqs)
 generated_headers = uudmap.h bitcount.h mg_data.h
 
@@ -1153,9 +1153,9 @@ pod/perlintern.pod: $(MINIPERL_EXE) autodoc.pl embed.fnc
 pod/perlmodlib.pod: $(MINIPERL_EXE) pod/perlmodlib.PL MANIFEST
 	$(MINIPERL) pod/perlmodlib.PL -q
 
-pod/perl5333delta.pod: pod/perldelta.pod
-	$(RMS) pod/perl5333delta.pod
-	$(LNS) perldelta.pod pod/perl5333delta.pod
+pod/perl5334delta.pod: pod/perldelta.pod
+	$(RMS) pod/perl5334delta.pod
+	$(LNS) perldelta.pod pod/perl5334delta.pod
 
 extra.pods: $(MINIPERL_EXE)
 	-@test ! -f extra.pods || rm -f `cat extra.pods`
diff --git a/pod/.gitignore b/pod/.gitignore
index 7a7ebfef57..089fe5a4dc 100644
--- a/pod/.gitignore
+++ b/pod/.gitignore
@@ -49,7 +49,7 @@
 /roffitall
 
 # generated
-/perl5333delta.pod
+/perl5334delta.pod
 /perlapi.pod
 /perlintern.pod
 /perlmodlib.pod
diff --git a/pod/perl.pod b/pod/perl.pod
index 3597a510b7..557c5dbe89 100644
--- a/pod/perl.pod
+++ b/pod/perl.pod
@@ -182,6 +182,7 @@ aux h2ph h2xs perlbug pl2pm pod2html pod2man splain xsubpp
 
     perlhist		Perl history records
     perldelta		Perl changes since previous version
+    perl5333delta	Perl changes in version 5.33.3
     perl5332delta	Perl changes in version 5.33.2
     perl5331delta	Perl changes in version 5.33.1
     perl5330delta	Perl changes in version 5.33.0
diff --git a/pod/perl5333delta.pod b/pod/perl5333delta.pod
new file mode 100644
index 0000000000..11cd7553ce
--- /dev/null
+++ b/pod/perl5333delta.pod
@@ -0,0 +1,338 @@
+=encoding utf8
+
+=head1 NAME
+
+perl5333delta - what is new for perl v5.33.3
+
+=head1 DESCRIPTION
+
+This document describes differences between the 5.33.2 release and the 5.33.3
+release.
+
+If you are upgrading from an earlier release such as 5.33.1, first read
+L<perl5332delta>, which describes differences between 5.33.1 and 5.33.2.
+
+=head1 Modules and Pragmata
+
+=head2 Updated Modules and Pragmata
+
+=over 4
+
+=item *
+
+L<bytes> has been upgraded from version 1.07 to 1.08.
+
+=item *
+
+L<CPAN> has been upgraded from version 2.27 to 2.28.
+
+=item *
+
+L<Data::Dumper> has been upgraded from version 2.175 to 2.176.
+
+=item *
+
+L<DB> has been upgraded from version 1.58 to 1.59.
+
+=item *
+
+L<DB_File> has been upgraded from version 1.854 to 1.855.
+
+=item *
+
+L<Devel::Peek> has been upgraded from version 1.29 to 1.30.
+
+=item *
+
+L<Devel::PPPort> has been upgraded from version 3.60 to 3.62.
+
+=item *
+
+L<Digest> has been upgraded from version 1.17_01 to 1.19.
+
+=item *
+
+L<Digest::MD5> has been upgraded from version 2.55_01 to 2.58.
+
+=item *
+
+L<Encode> has been upgraded from version 3.06 to 3.07.
+
+=item *
+
+L<Errno> has been upgraded from version 1.32 to 1.33.
+
+=item *
+
+L<experimental> has been upgraded from version 0.020 to 0.022.
+
+=item *
+
+L<Exporter> has been upgraded from version 5.75 to 5.76.
+
+=item *
+
+L<ExtUtils::MakeMaker> has been upgraded from version 7.44 to 7.48.
+
+=item *
+
+L<ExtUtils::PL2Bat> has been upgraded from version 0.002 to 0.003.
+
+=item *
+
+L<feature> has been upgraded from version 1.60 to 1.61.
+
+=item *
+
+L<File::Temp> has been upgraded from version 0.2309 to 0.2311.
+
+=item *
+
+L<FindBin> has been upgraded from version 1.51 to 1.52.
+
+=item *
+
+L<Getopt::Long> has been upgraded from version 2.51 to 2.52.
+
+=item *
+
+L<Getopt::Std> has been upgraded from version 1.12 to 1.13.
+
+=item *
+
+L<I18N::LangTags> has been upgraded from version 0.44 to 0.45.
+
+=item *
+
+L<if> has been upgraded from version 0.0608 to 0.0609.
+
+=item *
+
+L<locale> has been upgraded from version 1.09 to 1.10.
+
+=item *
+
+L<MIME::Base64> has been upgraded from version 3.15 to 3.16.
+
+=item *
+
+L<Module::CoreList> has been upgraded from version 5.20200920 to 5.20201020.
+
+=item *
+
+L<Module::Load> has been upgraded from version 0.34 to 0.36.
+
+=item *
+
+L<mro> has been upgraded from version 1.24 to 1.25.
+
+=item *
+
+L<overload> has been upgraded from version 1.32 to 1.33.
+
+=item *
+
+L<Pod::Checker> has been upgraded from version 1.73 to 1.74.
+
+=item *
+
+L<Pod::Simple> has been upgraded from version 3.40 to 3.41.
+
+=item *
+
+L<Pod::Usage> has been upgraded from version 1.70 to 2.01.
+
+=item *
+
+L<re> has been upgraded from version 0.40 to 0.41.
+
+(See under L</Internal Changes> for more information.)
+
+=item *
+
+L<Storable> has been upgraded from version 3.22 to 3.23.
+
+=item *
+
+L<subs> has been upgraded from version 1.03 to 1.04.
+
+=item *
+
+L<Symbol> has been upgraded from version 1.08 to 1.09.
+
+=item *
+
+L<Test::Simple> has been upgraded from version 1.302181 to 1.302182.
+
+=item *
+
+L<Tie::RefHash> has been upgraded from version 1.39 to 1.40.
+
+=item *
+
+L<Time::Local> has been upgraded from version 1.28 to 1.30.
+
+=item *
+
+L<Unicode::Collate> has been upgraded from version 1.27 to 1.29.
+
+=item *
+
+L<utf8> has been upgraded from version 1.22 to 1.24.
+
+=item *
+
+L<version> has been upgraded from version 0.9924 to 0.9928.
+
+=item *
+
+L<Win32> has been upgraded from version 0.53 to 0.54.
+
+=item *
+
+L<XS::APItest> has been upgraded from version 1.11 to 1.12.
+
+=back
+
+=head1 Documentation
+
+=head2 Changes to Existing Documentation
+
+We have attempted to update the documentation to reflect the changes listed in
+this document.  If you find any we have missed, open an issue at
+L<https://github.com/Perl/perl5/issues>.
+
+=head1 Configuration and Compilation
+
+=over 4
+
+=item *
+
+Added the F<Configure> option B<-Dusedefaultstrict> to enable strict by default
+in perl programs when not invoked with B<-e> or B<-E>.  This is a diagnostic
+tool for development.
+
+=item *
+
+We now trap SIGBUS when F<Configure> checks for C<va_copy>.
+
+On several systems the attempt to determine if we need C<va_copy> or similar
+results in a SIGBUS instead of the expected SIGSEGV, which previously caused a
+core dump.
+
+[L<GH #18148|https://github.com/Perl/perl5/issues/18148>]
+
+=back
+
+=head1 Testing
+
+Tests were added and changed to reflect the other additions and changes in this
+release.
+
+=head1 Platform Support
+
+=head2 Platform-Specific Notes
+
+=over 4
+
+=item Windows
+
+The same manifest is now used for Visual C++ and gcc builds.
+
+Previously, MSVC builds were using the B</manifestdependency> flag instead of
+embedding F<perlexe.manifest>, which caused issues such as C<GetVersionEx()>
+returning the wrong version number on Windows 10.
+
+=back
+
+=head1 Internal Changes
+
+=over 4
+
+=item *
+
+The L<re> module has a new function C<optimization>, which can return a hashref
+of optimization data discovered about a compiled regexp.
+
+=back
+
+=head1 Selected Bug Fixes
+
+=over 4
+
+=item *
+
+Fixed a bug in which some regexps with recursive subpatterns matched
+incorrectly.
+
+[L<GH #18096|https://github.com/Perl/perl5/issues/18096>]
+
+=back
+
+=head1 Acknowledgements
+
+Perl 5.33.3 represents approximately 4 weeks of development since Perl 5.33.2
+and contains approximately 90,000 lines of changes across 740 files from 20
+authors.
+
+Excluding auto-generated files, documentation and release tools, there were
+approximately 15,000 lines of changes to 500 .pm, .t, .c and .h files.
+
+Perl continues to flourish into its fourth decade thanks to a vibrant community
+of users and developers.  The following people are known to have contributed
+the improvements that became Perl 5.33.3:
+
+Christian Walde (Mithaldu), Dan Book, Eric Lindblad, Felipe Gasper, H.Merijn
+Brand, Hugo van der Sanden, Ichinose Shogo, James E Keenan, Karen Etheridge,
+Karl Williamson, Nicolas R., Richard Leach, Samanta Navarro, Sawyer X, Steve
+Hay, TAKAI Kousuke, Thibault Duponchelle, Todd Rinaldo, Tomasz Konojacki, Tony
+Cook.
+
+The list above is almost certainly incomplete as it is automatically generated
+from version control history.  In particular, it does not include the names of
+the (very much appreciated) contributors who reported issues to the Perl bug
+tracker.
+
+Many of the changes included in this version originated in the CPAN modules
+included in Perl's core.  We're grateful to the entire CPAN community for
+helping Perl to flourish.
+
+For a more complete list of all of Perl's historical contributors, please see
+the F<AUTHORS> file in the Perl source distribution.
+
+=head1 Reporting Bugs
+
+If you find what you think is a bug, you might check the perl bug database at
+L<https://github.com/Perl/perl5/issues>.  There may also be information at
+L<http://www.perl.org/>, the Perl Home Page.
+
+If you believe you have an unreported bug, please open an issue at
+L<https://github.com/Perl/perl5/issues>.  Be sure to trim your bug down to a
+tiny but sufficient test case.
+
+If the bug you are reporting has security implications which make it
+inappropriate to send to a public issue tracker, then see
+L<perlsec/SECURITY VULNERABILITY CONTACT INFORMATION> for details of how to
+report the issue.
+
+=head1 Give Thanks
+
+If you wish to thank the Perl 5 Porters for the work we had done in Perl 5, you
+can do so by running the C<perlthanks> program:
+
+    perlthanks
+
+This will send an email to the Perl 5 Porters list with your show of thanks.
+
+=head1 SEE ALSO
+
+The F<Changes> file for an explanation of how to view exhaustive details on
+what changed.
+
+The F<INSTALL> file for how to build Perl.
+
+The F<README> file for general stuff.
+
+The F<Artistic> and F<Copying> files for copyright information.
+
+=cut
diff --git a/pod/perldelta.pod b/pod/perldelta.pod
index 2b929ed473..dfdd782598 100644
--- a/pod/perldelta.pod
+++ b/pod/perldelta.pod
@@ -2,308 +2,413 @@
 
 =head1 NAME
 
-perldelta - what is new for perl v5.33.3
+[ this is a template for a new perldelta file.  Any text flagged as XXX needs
+to be processed before release. ]
+
+perldelta - what is new for perl v5.33.4
 
 =head1 DESCRIPTION
 
-This document describes differences between the 5.33.2 release and the 5.33.3
+This document describes differences between the 5.33.3 release and the 5.33.4
 release.
 
-If you are upgrading from an earlier release such as 5.33.1, first read
-L<perl5332delta>, which describes differences between 5.33.1 and 5.33.2.
+If you are upgrading from an earlier release such as 5.33.2, first read
+L<perl5333delta>, which describes differences between 5.33.2 and 5.33.3.
 
-=head1 Modules and Pragmata
+=head1 Notice
 
-=head2 Updated Modules and Pragmata
+XXX Any important notices here
 
-=over 4
+=head1 Core Enhancements
 
-=item *
+XXX New core language features go here.  Summarize user-visible core language
+enhancements.  Particularly prominent performance optimisations could go
+here, but most should go in the L</Performance Enhancements> section.
 
-L<bytes> has been upgraded from version 1.07 to 1.08.
+[ List each enhancement as a =head2 entry ]
 
-=item *
+=head1 Security
 
-L<CPAN> has been upgraded from version 2.27 to 2.28.
+XXX Any security-related notices go here.  In particular, any security
+vulnerabilities closed should be noted here rather than in the
+L</Selected Bug Fixes> section.
 
-=item *
+[ List each security issue as a =head2 entry ]
 
-L<Data::Dumper> has been upgraded from version 2.175 to 2.176.
+=head1 Incompatible Changes
 
-=item *
+XXX For a release on a stable branch, this section aspires to be:
 
-L<DB> has been upgraded from version 1.58 to 1.59.
+    There are no changes intentionally incompatible with 5.XXX.XXX
+    If any exist, they are bugs, and we request that you submit a
+    report.  See L</Reporting Bugs> below.
 
-=item *
+[ List each incompatible change as a =head2 entry ]
 
-L<DB_File> has been upgraded from version 1.854 to 1.855.
+=head1 Deprecations
 
-=item *
+XXX Any deprecated features, syntax, modules etc. should be listed here.
 
-L<Devel::Peek> has been upgraded from version 1.29 to 1.30.
+=head2 Module removals
 
-=item *
+XXX Remove this section if not applicable.
 
-L<Devel::PPPort> has been upgraded from version 3.60 to 3.62.
+The following modules will be removed from the core distribution in a
+future release, and will at that time need to be installed from CPAN.
+Distributions on CPAN which require these modules will need to list them as
+prerequisites.
 
-=item *
+The core versions of these modules will now issue C<"deprecated">-category
+warnings to alert you to this fact.  To silence these deprecation warnings,
+install the modules in question from CPAN.
 
-L<Digest> has been upgraded from version 1.17_01 to 1.19.
+Note that these are (with rare exceptions) fine modules that you are encouraged
+to continue to use.  Their disinclusion from core primarily hinges on their
+necessity to bootstrapping a fully functional, CPAN-capable Perl installation,
+not usually on concerns over their design.
 
-=item *
+=over
 
-L<Digest::MD5> has been upgraded from version 2.55_01 to 2.58.
+=item XXX
 
-=item *
+XXX Note that deprecated modules should be listed here even if they are listed
+as an updated module in the L</Modules and Pragmata> section.
+
+=back
 
-L<Encode> has been upgraded from version 3.06 to 3.07.
+[ List each other deprecation as a =head2 entry ]
 
-=item *
+=head1 Performance Enhancements
 
-L<Errno> has been upgraded from version 1.32 to 1.33.
+XXX Changes which enhance performance without changing behaviour go here.
+There may well be none in a stable release.
 
-=item *
+[ List each enhancement as an =item entry ]
 
-L<experimental> has been upgraded from version 0.020 to 0.022.
+=over 4
 
 =item *
 
-L<Exporter> has been upgraded from version 5.75 to 5.76.
+XXX
 
-=item *
+=back
 
-L<ExtUtils::MakeMaker> has been upgraded from version 7.44 to 7.48.
+=head1 Modules and Pragmata
 
-=item *
+XXX All changes to installed files in F<cpan/>, F<dist/>, F<ext/> and F<lib/>
+go here.  If Module::CoreList is updated, generate an initial draft of the
+following sections using F<Porting/corelist-perldelta.pl>.  A paragraph summary
+for important changes should then be added by hand.  In an ideal world,
+dual-life modules would have a F<Changes> file that could be cribbed.
 
-L<ExtUtils::PL2Bat> has been upgraded from version 0.002 to 0.003.
+The list of new and updated modules is modified automatically as part of
+preparing a Perl release, so the only reason to manually add entries here is if
+you're summarising the important changes in the module update. (Also, if the
+manually-added details don't match the automatically-generated ones, the
+release manager will have to investigate the situation carefully.)
 
-=item *
+[ Within each section, list entries as an =item entry ]
+
+=head2 New Modules and Pragmata
 
-L<feature> has been upgraded from version 1.60 to 1.61.
+=over 4
 
 =item *
 
-L<File::Temp> has been upgraded from version 0.2309 to 0.2311.
+XXX Remove this section if not applicable.
 
-=item *
+=back
+
+=head2 Updated Modules and Pragmata
 
-L<FindBin> has been upgraded from version 1.51 to 1.52.
+=over 4
 
 =item *
 
-L<Getopt::Long> has been upgraded from version 2.51 to 2.52.
+L<XXX> has been upgraded from version A.xx to B.yy.
 
-=item *
+If there was something important to note about this change, include that here.
 
-L<Getopt::Std> has been upgraded from version 1.12 to 1.13.
+=back
 
-=item *
+=head2 Removed Modules and Pragmata
 
-L<I18N::LangTags> has been upgraded from version 0.44 to 0.45.
+=over 4
 
 =item *
 
-L<if> has been upgraded from version 0.0608 to 0.0609.
+XXX
 
-=item *
+=back
 
-L<locale> has been upgraded from version 1.09 to 1.10.
+=head1 Documentation
 
-=item *
+XXX Changes to files in F<pod/> go here.  Consider grouping entries by
+file and be sure to link to the appropriate page, e.g. L<perlfunc>.
 
-L<MIME::Base64> has been upgraded from version 3.15 to 3.16.
+=head2 New Documentation
 
-=item *
+XXX Changes which create B<new> files in F<pod/> go here.
 
-L<Module::CoreList> has been upgraded from version 5.20200920 to 5.20201020.
+=head3 L<XXX>
 
-=item *
+XXX Description of the purpose of the new file here
 
-L<Module::Load> has been upgraded from version 0.34 to 0.36.
+=head2 Changes to Existing Documentation
 
-=item *
+We have attempted to update the documentation to reflect the changes
+listed in this document.  If you find any we have missed, open an issue
+at L<https://github.com/Perl/perl5/issues>.
 
-L<mro> has been upgraded from version 1.24 to 1.25.
+XXX Changes which significantly change existing files in F<pod/> go here.
+However, any changes to F<pod/perldiag.pod> should go in the L</Diagnostics>
+section.
 
-=item *
+Additionally, the following selected changes have been made:
+
+=head3 L<XXX>
 
-L<overload> has been upgraded from version 1.32 to 1.33.
+=over 4
 
 =item *
 
-L<Pod::Checker> has been upgraded from version 1.73 to 1.74.
+XXX Description of the change here
 
-=item *
+=back
 
-L<Pod::Simple> has been upgraded from version 3.40 to 3.41.
+=head1 Diagnostics
 
-=item *
+The following additions or changes have been made to diagnostic output,
+including warnings and fatal error messages.  For the complete list of
+diagnostic messages, see L<perldiag>.
 
-L<Pod::Usage> has been upgraded from version 1.70 to 2.01.
+XXX New or changed warnings emitted by the core's C<C> code go here.  Also
+include any changes in L<perldiag> that reconcile it to the C<C> code.
 
-=item *
+=head2 New Diagnostics
+
+XXX Newly added diagnostic messages go under here, separated into New Errors
+and New Warnings
 
-L<re> has been upgraded from version 0.40 to 0.41.
+=head3 New Errors
 
-(See under L</Internal Changes> for more information.)
+=over 4
 
 =item *
 
-L<Storable> has been upgraded from version 3.22 to 3.23.
+XXX L<message|perldiag/"message">
 
-=item *
+=back
+
+=head3 New Warnings
 
-L<subs> has been upgraded from version 1.03 to 1.04.
+=over 4
 
 =item *
 
-L<Symbol> has been upgraded from version 1.08 to 1.09.
+XXX L<message|perldiag/"message">
 
-=item *
+=back
 
-L<Test::Simple> has been upgraded from version 1.302181 to 1.302182.
+=head2 Changes to Existing Diagnostics
 
-=item *
+XXX Changes (i.e. rewording) of diagnostic messages go here
 
-L<Tie::RefHash> has been upgraded from version 1.39 to 1.40.
+=over 4
 
 =item *
 
-L<Time::Local> has been upgraded from version 1.28 to 1.30.
+XXX Describe change here
 
-=item *
+=back
 
-L<Unicode::Collate> has been upgraded from version 1.27 to 1.29.
+=head1 Utility Changes
 
-=item *
+XXX Changes to installed programs such as F<perldoc> and F<xsubpp> go here.
+Most of these are built within the directory F<utils>.
 
-L<utf8> has been upgraded from version 1.22 to 1.24.
+[ List utility changes as a =head2 entry for each utility and =item
+entries for each change
+Use L<XXX> with program names to get proper documentation linking. ]
 
-=item *
+=head2 L<XXX>
 
-L<version> has been upgraded from version 0.9924 to 0.9928.
+=over 4
 
 =item *
 
-L<Win32> has been upgraded from version 0.53 to 0.54.
+XXX
+
+=back
+
+=head1 Configuration and Compilation
+
+XXX Changes to F<Configure>, F<installperl>, F<installman>, and analogous tools
+go here.  Any other changes to the Perl build process should be listed here.
+However, any platform-specific changes should be listed in the
+L</Platform Support> section, instead.
+
+[ List changes as an =item entry ].
+
+=over 4
 
 =item *
 
-L<XS::APItest> has been upgraded from version 1.11 to 1.12.
+XXX
 
 =back
 
-=head1 Documentation
+=head1 Testing
 
-=head2 Changes to Existing Documentation
+XXX Any significant changes to the testing of a freshly built perl should be
+listed here.  Changes which create B<new> files in F<t/> go here as do any
+large changes to the testing harness (e.g. when parallel testing was added).
+Changes to existing files in F<t/> aren't worth summarizing, although the bugs
+that they represent may be covered elsewhere.
 
-We have attempted to update the documentation to reflect the changes listed in
-this document.  If you find any we have missed, open an issue at
-L<https://github.com/Perl/perl5/issues>.
+XXX If there were no significant test changes, say this:
 
-=head1 Configuration and Compilation
+Tests were added and changed to reflect the other additions and changes
+in this release.
+
+XXX If instead there were significant changes, say this:
+
+Tests were added and changed to reflect the other additions and
+changes in this release.  Furthermore, these significant changes were
+made:
+
+[ List each test improvement as an =item entry ]
 
 =over 4
 
 =item *
 
-Added the F<Configure> option B<-Dusedefaultstrict> to enable strict by default
-in perl programs when not invoked with B<-e> or B<-E>.  This is a diagnostic
-tool for development.
+XXX
 
-=item *
+=back
 
-We now trap SIGBUS when F<Configure> checks for C<va_copy>.
+=head1 Platform Support
 
-On several systems the attempt to determine if we need C<va_copy> or similar
-results in a SIGBUS instead of the expected SIGSEGV, which previously caused a
-core dump.
+XXX Any changes to platform support should be listed in the sections below.
 
-[L<GH #18148|https://github.com/Perl/perl5/issues/18148>]
+[ Within the sections, list each platform as an =item entry with specific
+changes as paragraphs below it. ]
+
+=head2 New Platforms
+
+XXX List any platforms that this version of perl compiles on, that previous
+versions did not.  These will either be enabled by new files in the F<hints/>
+directories, or new subdirectories and F<README> files at the top level of the
+source tree.
+
+=over 4
+
+=item XXX-some-platform
+
+XXX
 
 =back
 
-=head1 Testing
+=head2 Discontinued Platforms
 
-Tests were added and changed to reflect the other additions and changes in this
-release.
+XXX List any platforms that this version of perl no longer compiles on.
 
-=head1 Platform Support
+=over 4
+
+=item XXX-some-platform
+
+XXX
+
+=back
 
 =head2 Platform-Specific Notes
 
-=over 4
+XXX List any changes for specific platforms.  This could include configuration
+and compilation changes or changes in portability/compatibility.  However,
+changes within modules for platforms should generally be listed in the
+L</Modules and Pragmata> section.
 
-=item Windows
+=over 4
 
-The same manifest is now used for Visual C++ and gcc builds.
+=item XXX-some-platform
 
-Previously, MSVC builds were using the B</manifestdependency> flag instead of
-embedding F<perlexe.manifest>, which caused issues such as C<GetVersionEx()>
-returning the wrong version number on Windows 10.
+XXX
 
 =back
 
 =head1 Internal Changes
 
+XXX Changes which affect the interface available to C<XS> code go here.  Other
+significant internal changes for future core maintainers should be noted as
+well.
+
+[ List each change as an =item entry ]
+
 =over 4
 
 =item *
 
-The L<re> module has a new function C<optimization>, which can return a hashref
-of optimization data discovered about a compiled regexp.
+XXX
 
 =back
 
 =head1 Selected Bug Fixes
 
+XXX Important bug fixes in the core language are summarized here.  Bug fixes in
+files in F<ext/> and F<lib/> are best summarized in L</Modules and Pragmata>.
+
+[ List each fix as an =item entry ]
+
 =over 4
 
 =item *
 
-Fixed a bug in which some regexps with recursive subpatterns matched
-incorrectly.
+XXX
+
+=back
 
-[L<GH #18096|https://github.com/Perl/perl5/issues/18096>]
+=head1 Known Problems
+
+XXX Descriptions of platform agnostic bugs we know we can't fix go here.  Any
+tests that had to be C<TODO>ed for the release would be noted here.  Unfixed
+platform specific bugs also go here.
+
+[ List each fix as an =item entry ]
+
+=over 4
+
+=item *
+
+XXX
 
 =back
 
-=head1 Acknowledgements
+=head1 Errata From Previous Releases
 
-Perl 5.33.3 represents approximately 4 weeks of development since Perl 5.33.2
-and contains approximately 90,000 lines of changes across 740 files from 20
-authors.
+=over 4
 
-Excluding auto-generated files, documentation and release tools, there were
-approximately 15,000 lines of changes to 500 .pm, .t, .c and .h files.
+=item *
 
-Perl continues to flourish into its fourth decade thanks to a vibrant community
-of users and developers.  The following people are known to have contributed
-the improvements that became Perl 5.33.3:
+XXX Add anything here that we forgot to add, or were mistaken about, in
+the perldelta of a previous release.
 
-Christian Walde (Mithaldu), Dan Book, Eric Lindblad, Felipe Gasper, H.Merijn
-Brand, Hugo van der Sanden, Ichinose Shogo, James E Keenan, Karen Etheridge,
-Karl Williamson, Nicolas R., Richard Leach, Samanta Navarro, Sawyer X, Steve
-Hay, TAKAI Kousuke, Thibault Duponchelle, Todd Rinaldo, Tomasz Konojacki, Tony
-Cook.
+=back
 
-The list above is almost certainly incomplete as it is automatically generated
-from version control history.  In particular, it does not include the names of
-the (very much appreciated) contributors who reported issues to the Perl bug
-tracker.
+=head1 Obituary
+
+XXX If any significant core contributor or member of the CPAN community has
+died, add a short obituary here.
+
+=head1 Acknowledgements
 
-Many of the changes included in this version originated in the CPAN modules
-included in Perl's core.  We're grateful to the entire CPAN community for
-helping Perl to flourish.
+XXX Generate this with:
 
-For a more complete list of all of Perl's historical contributors, please see
-the F<AUTHORS> file in the Perl source distribution.
+  perl Porting/acknowledgements.pl v5.33.3..HEAD
 
 =head1 Reporting Bugs
 
-If you find what you think is a bug, you might check the perl bug database at
-L<https://github.com/Perl/perl5/issues>.  There may also be information at
+If you find what you think is a bug, you might check the perl bug database
+at L<https://github.com/Perl/perl5/issues>.  There may also be information at
 L<http://www.perl.org/>, the Perl Home Page.
 
 If you believe you have an unreported bug, please open an issue at
@@ -312,13 +417,13 @@ tiny but sufficient test case.
 
 If the bug you are reporting has security implications which make it
 inappropriate to send to a public issue tracker, then see
-L<perlsec/SECURITY VULNERABILITY CONTACT INFORMATION> for details of how to
-report the issue.
+L<perlsec/SECURITY VULNERABILITY CONTACT INFORMATION>
+for details of how to report the issue.
 
 =head1 Give Thanks
 
-If you wish to thank the Perl 5 Porters for the work we had done in Perl 5, you
-can do so by running the C<perlthanks> program:
+If you wish to thank the Perl 5 Porters for the work we had done in Perl 5,
+you can do so by running the C<perlthanks> program:
 
     perlthanks
 
diff --git a/vms/descrip_mms.template b/vms/descrip_mms.template
index e3d041973a..dd12252a8b 100644
--- a/vms/descrip_mms.template
+++ b/vms/descrip_mms.template
@@ -313,7 +313,7 @@ utils : $(utils1) $(utils2) $(utils3) $(utils4) $(utils5)
 extra.pods : miniperl
 	@ @extra_pods.com
 
-PERLDELTA_CURRENT = [.pod]perl5333delta.pod
+PERLDELTA_CURRENT = [.pod]perl5334delta.pod
 
 $(PERLDELTA_CURRENT) : [.pod]perldelta.pod
 	Copy/NoConfirm/Log $(MMS$SOURCE) $(PERLDELTA_CURRENT)
diff --git a/win32/GNUmakefile b/win32/GNUmakefile
index b63fc6adf2..f670b96dca 100644
--- a/win32/GNUmakefile
+++ b/win32/GNUmakefile
@@ -1743,7 +1743,7 @@ utils: $(HAVEMINIPERL) ..\utils\Makefile
 	copy ..\README.tw       ..\pod\perltw.pod
 	copy ..\README.vos      ..\pod\perlvos.pod
 	copy ..\README.win32    ..\pod\perlwin32.pod
-	copy ..\pod\perldelta.pod ..\pod\perl5333delta.pod
+	copy ..\pod\perldelta.pod ..\pod\perl5334delta.pod
 	$(MINIPERL) -I..\lib $(PL2BAT) $(UTILS)
 	$(MINIPERL) -I..\lib ..\autodoc.pl ..
 	$(MINIPERL) -I..\lib ..\pod\perlmodlib.PL -q ..
@@ -1841,7 +1841,7 @@ distclean: realclean
 	-if exist $(LIBDIR)\Win32API rmdir /s /q $(LIBDIR)\Win32API
 	-if exist $(LIBDIR)\XS rmdir /s /q $(LIBDIR)\XS
 	-cd $(PODDIR) && del /f *.html *.bat roffitall \
-	    perl5333delta.pod perlaix.pod perlamiga.pod perlandroid.pod \
+	    perl5334delta.pod perlaix.pod perlamiga.pod perlandroid.pod \
 	    perlapi.pod perlbs2000.pod perlcn.pod perlcygwin.pod \
 	    perldos.pod perlfreebsd.pod perlhaiku.pod perlhpux.pod \
 	    perlhurd.pod perlintern.pod perlirix.pod perljp.pod perlko.pod \
diff --git a/win32/Makefile b/win32/Makefile
index 7b8c5ba273..eca0505364 100644
--- a/win32/Makefile
+++ b/win32/Makefile
@@ -1264,7 +1264,7 @@ utils: $(PERLEXE) ..\utils\Makefile
 	copy ..\README.tw       ..\pod\perltw.pod
 	copy ..\README.vos      ..\pod\perlvos.pod
 	copy ..\README.win32    ..\pod\perlwin32.pod
-	copy ..\pod\perldelta.pod ..\pod\perl5333delta.pod
+	copy ..\pod\perldelta.pod ..\pod\perl5334delta.pod
 	cd ..\win32
 	$(PERLEXE) $(PL2BAT) $(UTILS)
 	$(MINIPERL) -I..\lib ..\autodoc.pl ..
@@ -1363,7 +1363,7 @@ distclean: realclean
 	-if exist $(LIBDIR)\Win32API rmdir /s /q $(LIBDIR)\Win32API
 	-if exist $(LIBDIR)\XS rmdir /s /q $(LIBDIR)\XS
 	-cd $(PODDIR) && del /f *.html *.bat roffitall \
-	    perl5333delta.pod perlaix.pod perlamiga.pod perlandroid.pod \
+	    perl5334delta.pod perlaix.pod perlamiga.pod perlandroid.pod \
 	    perlapi.pod perlbs2000.pod perlcn.pod perlcygwin.pod \
 	    perldos.pod perlfreebsd.pod perlhaiku.pod perlhpux.pod \
 	    perlhurd.pod perlintern.pod perlirix.pod perljp.pod perlko.pod \
diff --git a/win32/makefile.mk b/win32/makefile.mk
index 3d6daca43e..edae4d04f8 100644
--- a/win32/makefile.mk
+++ b/win32/makefile.mk
@@ -1662,7 +1662,7 @@ utils: $(HAVEMINIPERL) ..\utils\Makefile
 	copy ..\README.tw       ..\pod\perltw.pod
 	copy ..\README.vos      ..\pod\perlvos.pod
 	copy ..\README.win32    ..\pod\perlwin32.pod
-	copy ..\pod\perldelta.pod ..\pod\perl5333delta.pod
+	copy ..\pod\perldelta.pod ..\pod\perl5334delta.pod
 	$(MINIPERL) -I..\lib $(PL2BAT) $(UTILS)
 	$(MINIPERL) -I..\lib ..\autodoc.pl ..
 	$(MINIPERL) -I..\lib ..\pod\perlmodlib.PL -q ..
@@ -1760,7 +1760,7 @@ distclean: realclean
 	-if exist $(LIBDIR)\Win32API rmdir /s /q $(LIBDIR)\Win32API
 	-if exist $(LIBDIR)\XS rmdir /s /q $(LIBDIR)\XS
 	-cd $(PODDIR) && del /f *.html *.bat roffitall \
-	    perl5333delta.pod perlaix.pod perlamiga.pod perlandroid.pod \
+	    perl5334delta.pod perlaix.pod perlamiga.pod perlandroid.pod \
 	    perlapi.pod perlbs2000.pod perlcn.pod perlcygwin.pod \
 	    perldos.pod perlfreebsd.pod perlhaiku.pod perlhpux.pod \
 	    perlhurd.pod perlintern.pod perlirix.pod perljp.pod perlko.pod \
diff --git a/win32/pod.mak b/win32/pod.mak
index 111b65c2e5..20454fdd7a 100644
--- a/win32/pod.mak
+++ b/win32/pod.mak
@@ -67,6 +67,7 @@ POD = perl.pod	\
 	perl5331delta.pod	\
 	perl5332delta.pod	\
 	perl5333delta.pod	\
+	perl5334delta.pod	\
 	perl561delta.pod	\
 	perl56delta.pod	\
 	perl581delta.pod	\
@@ -230,6 +231,7 @@ MAN = perl.man	\
 	perl5331delta.man	\
 	perl5332delta.man	\
 	perl5333delta.man	\
+	perl5334delta.man	\
 	perl561delta.man	\
 	perl56delta.man	\
 	perl581delta.man	\
@@ -393,6 +395,7 @@ HTML = perl.html	\
 	perl5331delta.html	\
 	perl5332delta.html	\
 	perl5333delta.html	\
+	perl5334delta.html	\
 	perl561delta.html	\
 	perl56delta.html	\
 	perl581delta.html	\
@@ -556,6 +559,7 @@ TEX = perl.tex	\
 	perl5331delta.tex	\
 	perl5332delta.tex	\
 	perl5333delta.tex	\
+	perl5334delta.tex	\
 	perl561delta.tex	\
 	perl56delta.tex	\
 	perl581delta.tex	\