The much awaited version of Wordpress 2.5 has been released and i must say the admin panel looks amazing as promised and the interface is a very much cleaner once,

You can read more about this here

http://wordpress.org/development/2008/03/wordpress-25-brecker/

There are many features which have been added and the user interface has been greatly improved.

You can download a copy of Worpdress 2.5 here