WordPress 2.7  has been released after being delayed for about a week.
Here are some of the features according to the blog post:
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.
Digging in further you might notice that every screen is customizable. Let’s say you never care about author on your post listings — just click “Screen Options” and uncheck it and it’s instantly gone from the page. The same for any module on the dashboard or write screen. If your screen is narrow and the menu is taking up too much horizontal room, click the arrow to minimize it to be icon-only, and then go to the write page and drag and drop everything from the right column into the main one, so your posting area is full-screen. (For example I like hiding everything except categories, tags, and publish. I put categories and tags on the right, and publish under the post box.)
WordPress 2.7 also introduce the Automatic Core upgrade which unfortunately do not work for me. I am still very skeptical after automating web script upgrades. I prefer to do it the manual way so that I can control what I want.
I will release the updates to my plugins shortly.
Download: WordPress 2.7