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WordPress 3.9 Release Candidate

Posted April 8, 2014 by Andrew Nacin. Filed under Development, Releases.

As teased earlier, the first release candidate for WordPress 3.9 is now available for testing!

We hope to ship WordPress 3.9 next week, but we need your help to get there. If you haven’t tested 3.9 yet, there’s no time like the present. (Please, not on a production site, unless you’re adventurous.)

To test WordPress 3.9 RC1, try the WordPress Beta Tester plugin (you’ll want “bleeding edge nightlies”). Or you can download the release candidate here (zip). If you’d like to learn more about what’s new in WordPress 3.9, visit the work-in-progress About screen in your dashboard ( → About in the toolbar) and check out the Beta 1 post.

Think you’ve found a bug? Please post to the Alpha/Beta area in the support forums. If any known issues come up, you’ll be able to find them here.

If you’re a plugin author, there are two important changes in particular to be aware of:

  • TinyMCE received a major update, to version 4.0. Any editor plugins written for TinyMCE 3.x might require some updates. (If things broke, we’d like to hear about them so we can make adjustments.) For more, see TinyMCE’s migration guide and API documentation, and the notes on the core development blog.
  • WordPress 3.9 now uses the MySQLi Improved extension for sites running PHP 5.5. Any plugins that made direct calls to mysql_* functions will experience some problems on these sites. For more information, see the notes on the core development blog.

Be sure to follow along the core development blog, where we will be continuing to post notes for developers for 3.9. (For example, read this if you are using Masonry in your theme.) And please, please update your plugin’s Tested up to version in the readme to 3.9 before April 16.

Release candidate
This haiku’s the easy one
3.9 is near

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See Also:

For more WordPress news, check out the WordPress Planet.

There’s also a development P2 blog.

To see how active the project is check out our Trac timeline, it often has 20–30 updates per day.

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