is now running WordPress MU 1.3, which is equivalent to an upgrade from WordPress 2.2.2 to WordPress 2.3.1. New user-visible features include:

  • Native tagging support, including an easy converter if you were previously using categories like tags.
  • A pending review feature, which will be very handy for multi-author project blogs. You can now specifically submit a post for review by the blog editor.
  • Complete Atom 1.0 support, including the Atom Publishing Protocol.
  • Various performance improvements on the database side and the browser side.

Please file bugs if you notice any problems with the upgrade. Thanks as always to the WordPress and WordPress MU hackers!