WordPress 5.5.1 maintenance release has been announced

This maintenance release features 34 bug fixes, 5 enhancements, and 5 bug fixes for the block editor. These bugs affect WordPress version 5.5, so you’ll want to upgrade.

You can download WordPress 5.5.1 directly, or visit the Dashboard → Updates screen and click Update Now. If your sites support automatic background updates, they’ve already started the update process.

WordPress 5.5.1 is a short-cycle maintenance release. The next major release will be version 5.6.

To see a full list of changes, you can browse the list on Trac, read the 5.5.1 RC1 and 5.5.1 RC2 posts, or visit the 5.5.1 documentation page.