April 26th, 2016
After about six million downloads of WordPress 4.5, we are pleased to announce the immediate availability of WordPress 4.5.1, a maintenance release.
This release fixes 12 bugs, chief among them a singular class issue that broke sites based on the Twenty Eleven theme, an incompatibility between certain Chrome versions and the visual editor, and an Imagick bug that could break media uploads. This maintenance release fixes a total of 12 bugs in Version 4.5. For more information, see the release notes or consult the list of changes.
Download WordPress 4.5.1 or venture over to Dashboard → Updates and simply click “Update Now.” Sites that support automatic background updates are already beginning to update to WordPress 4.5.1.
Thanks to everyone who contributed to 4.5.1: