Here’s some of what’s new:
Performance improvements like you wouldn’t believe. What’s that mean? Things are faster!
Distraction-free Writing. The visual editor’s full-screen composing experience has gotten a major overhaul, and is now available from HTML mode, too. More than ever, WordPress allows you to focus on what matters most — your content.
Admin UI Refresh. The last major redesign of the WordPress admin was in 2008. This isn’t a major redesign, just a little facelift to keep us feeling young. WordPress turns 8 later this month, you know.
New Default Theme. Introducing Twenty Eleven, based on the popular Duster theme. Rotating header images, post format support, and more.
Browse Happy. WordPress is made to work with modern browsers. If you visit your Dashboard using an outdated web browser, we’ll let you know there’s a newer version available.
Admin Bar. We’ve added more links to the admin bar to make it even more useful.
WordPress has new minimum system requirements: PHP 5.2.4 and MySQL 5.0.
Internet Explorer 6 will no longer be supported.
The favorites menu has been removed. If you’ve written any plugins that use this menu, it’s time to switch over to an admin bar placement.
We haven’t updated the blue admin color scheme yet, so do your testing in the gray zone for best results.