This site is now running on WordPress 2.7! 🙂
The first thing you’ll notice about 2.7 is its new interface. From the top down, we’ve listened to your feedback and thought deeply about the design and the result is a WordPress that’s just plain faster. Nearly every task you do on your blog will take fewer clicks and be faster in 2.7 than it did in a previous version. (Download it now, or read on for more.)
Next you’ll begin to notice the new features subtly sprinkled through the new interface: the new dashboard that you can arrange with drag and drop to put the things most important to you on top, QuickPress, comment threading, paging, and the ability to reply to comments from your dashboard, the ability to install any plugin directly from WordPress.org with a single click, and sticky posts.
More info about the upgrade can be found at http://wordpress.org/development/2008/12/coltrane/