ATI has released its monthly set of Catalyst drivers a little early, and not in the usual place. This time, you can grab them through Ian McNaughton's blog, AMD's senior manager of advanced marketing (yep, it's advanced now); as usual, these are for HD2000 series cards and newer. No release notes as such at the moment, but it's our understanding this set includes OpenGL 3.1 support, and performance improvements for games such as Crysis, Far Cry 2, Battleforge, and World in Conflict.
Grab them at the source -- links are at the bottom of the post. And of course, be safe: uninstall the old set first and run something like Driver Sweeper before giving the new set a go.