Bump default theme versions for WordPress 6.9

[sabernhardt]

Bundled themes will need a version bump for the 6.9 release.

Previously:
#63681 - 6.8.2
#62990 - 6.8
#62034 - 6.7
#60701 - 6.6
#59816 - 6.5
#58832 - 6.4
#57857 - 6.3
#57689 - 6.2
#56450 - 6.1
#55754 - 6.0
#54783 - 5.9
#53277 - 5.8
#52704 - 5.7
#51919 - 5.6
#50889 - 5.5
#49743 - 5.4

[sabernhardt]

Except for Twenty Twenty-Three, all of the themes have at least one change (as of today).

[sabernhardt]

#63709 was marked as a duplicate.

Twenty Ten: 4.5
Twenty Eleven: 5.0
Twenty Twelve: 4.7
Twenty Thirteen: 4.5
Twenty Fourteen: 4.4
Twenty Fifteen: 4.1
Twenty Sixteen: 3.7
Twenty Seventeen: 4.0
Twenty Nineteen: 3.2
Twenty Twenty: 3.0
Twenty Twenty-One: 2.7
Twenty Twenty-Two: 2.1
Twenty Twenty-Three: 1.7
Twenty Twenty-Four: 1.4
Twenty Twenty-Five: 1.4

Trac ticket: #60999

I'm not ready to do a thorough review, but I have two comments.

• r60934 added package.json and package-lock.json files to Twenty Twenty-Two and Twenty Twenty-Five, and those also need updates to the version number.
• Twenty Twenty-Three still has no code changes since 1.6. That theme might only have the "Tested up to" version bump, as in r60158, again without packaging a new theme.

All the mentioned feedback has been incorporated in the latest commit.

​https://github.com/WordPress/wordpress-develop/blob/a44019b4084cf1f20c97189020942383b029234c/src/wp-content/themes/twentyeleven/inc/theme-options.php#L421

The dark.css file has been updated with the following changeset:

https://core.trac.wordpress.org/changeset/60960

If we respect the commit date of the changeset, the new string will be 20251017. If we respect the 6.9 release date, it will be 20251202.

As far as my research goes, that's all the feedback I have. I would appreciate it if someone more knowledgeable could add further reviews.

​https://github.com/WordPress/wordpress-develop/blob/a44019b4084cf1f20c97189020942383b029234c/src/wp-content/themes/twentyeleven/inc/theme-options.php#L421

The dark.css file has been updated with the following changeset:

https://core.trac.wordpress.org/changeset/60960

If we respect the commit date of the changeset, the new string will be 20251017. If we respect the 6.9 release date, it will be 20251202.

I agree this date should be last modified date. I will update this date.

@shail-mehta, The force push may have caused a regression 😅

Released: December 02, 2025 should be Released: December 2, 2025

Yeah I reverting it

[wildworks]

This ticket was brought up in the 6.9 Bug SCrub today. From what I can see, it's ready to commit, but I'd appreciate some second feedback from someone more knowledgeable.

I’ve gone through the PR, and it looks all set from my side.