This is a screenshot of the current GNOME Shell from Git which shows the new workspace thumbnails, large icons(size can be set in the css file) for applications and search with Wiki and Google.
The workspace thumbnail panel slides out from the side of the screen and you can drag apps into the thumbnail, which creates a new workspace as well. The thumbnails show live, so videos play from the other workspaces.
Faenza iconsGames icon packThis is most likely the final look of the GNOME Shell default theme (minus the Faenza icons of course) for the release in April 2011.
Mutter effects also look more polished than compiz effects.