WordPress 3.2 (due out in June 2011) is in the process of receiving a style refresh for the WordPress dashboard.

In the last few hours these changes (still a work in progress) have been committed. See below for some screenshots of the new UI:

WordPress 3.2 Dashboard

WordPress 3.2 Posts Listing

WordPress 3.2 Add Post

Although still far from finalised, I’m already a fan of the new Dashboard

Ref: Trac Ticket #17324 | Make WordPress UI