WordPress version 2.7 has been released and available for download. From the announcement page:
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.
What is new in WordPress 2.7
For a visual introduction to what 2.7 is, check out this video (available in HD, and full screen):
Download the latest release of WordPress version 2.7, released on 10 December 2008 (via official blog).