If you are using WordPress for your blog, you will not even recognize the newest version of WordPress as a WordPress application.
The interface is slick and loaded with AJAX, but is slicker better? Well we’ve seen bugs in the spell checker and image up loader already. I know that WordPress has some fixes for this already in place, but what a pain.
There is some new power with the new application, but I was so comfortable with the old set up, it is hard to get used to the new interface. If you are currently using the older version of WordPress, you may want to wait several months to upgrade until some of these bugs are worked out.