Release Notes: Major work was done on the TinyMCE WYSIWYG editor, creating a custom schema to adhere to the HTML5 living standard. It should now handle unusual OBJECT/EMBED situations, among other things.
Release Notes: Final UI improvements to the media manager. Better reporting for upload errors. Improvements for mobile, IE, and RTL languages. A cookie fix for sub-domain multi-site when installed in a sub-folder.
Release Notes: This will probably be the final release candidate before the official release of WordPress 3.5. This version has a completely new media library, Dashboard streamlining, new performance enhancements for Multisite, the ability to enable Multisite when installed in a subdirectory of the document root, and other features and enhancements.
Release Notes: The new Media Library has some of the most significant changes.
Release Notes: This release has a new batch of bugfixes and minor changes. There is a new menu_page_url() function that will make it easier to link between multiple admin option pages. The is_post_type() function has been renamed to post_type_exists() to make its purpose more clear and avoid confusion with the other is_*() conditional functions. Barring any unforeseen problems, this will likely be the last release candidate before the official 3.0 release.
Release Notes: This release contains many bugfixes and improvements since Release Candidate 1. There have been improvements in the nav menus, multisite, the TwentyTen theme, and the upgrade functions, to name a few. There is also new contextual help available.
Release Notes: Nav menus have been finalized, and the Multisite functionality (WPMU merge) is complete.
Release Notes: These changes were made since the 2.8 release. A bug was fixed in which the wrong files were deleted when the core update failed. Memory requirements in the Dashboard were improved. A problem was worked around in some third-party themes that tried to call get_categories() before the function was loaded. Extra security was put in place for some third-party plugins that don't do their own explicit permission checks. Various other minor bugfixes, tweaks, and improvements were made.