Wikipedia launched, a couple of days ago, a Beta version of the highly popular online encyclopedia. The update focuses around enhancing usability and thus stimulate more to edit and create new content.
Images taken from Wikipedia itself, showing off some bits of the new design.
The Coffee Desk has an article about the Wikipedia Beta, highlighting the design, the search function, the use of AJAX and the new text-editor. As I have been unable to test this Beta myself, I leave you to read that article!