AMD has finalized its Catalyst 11.10 drivers, which have been available in some form of hotfix or preview download since late September. Although today's release notes don't seem to mention any raw performance boosts, previous iterations brought various improvements to Battlefield 3 and Rage, so you should stand to gain those increases if you're upgrading from Catalyst 11.9 or earlier. Besides the ambiguous speed boosts, Catalyst 11.10 totes a handful of new features and a slew of bug fixes.
Eyefinity now supports 5x1 display (portrait and landscape) configurations when using Radeon HD 5000 or 6000 series cards, the maximum resolution for HD 6000 series cards has been raised to 16,000 x 16,000 pixels in DirectX 11 apps, and bezel compensation is now available when using monitors with different pixel densities. AMD has also tweaked its Vision Engine Control Center and Catalyst Control Center with interface enhancements on the CrossfireX, GPU Overdrive and Information Center pages.
AMD has also resolved corruption problems with certain OpenGL games such as Enemy Territory Quake Wars. Lost Planet 2's benchmark no longer crashes randomly, F1 2010 and Dirt 2 shouldn't experience random flashing in-game anymore, Mafia II doesn't quit mid-load when playing with Crossfire, random crashes with Homefront have been resolved, and Unigine Heaven's performance should be more stable when running in DirectX 11 mode with multiple graphics cards. There are also various other fixes for crashes, corruption and other issues related to M2V/MPEG2/MPEG4 playback, video playback on a 120Hz display, and Windows' Aero interface. You can read the full release notes on the download page.