AMD Catalyst 11.11a 32 and 64-bit

AMD Catalyst 11.11a performance driver features:

Batman Arkham City

Rage

Delivers AMD CrossfireX performance scaling
Resolves a number of image / stability issues seen with the title:
Fix geometry corruption, sometimes seen in Bash TV entrance
Fix issues with Low-memory conditions on 32bit systems.
Fix issue with extreme corruption with missing textures on 32bit systems.
Fix memory leaks when deleting/reusing sync objects.
Fix hitching and pausing, especially noticeable on some Quad Core systems when doing races and Stanley Express runs.
Fix some missing shadows

Elder Scrolls Skyrim

Improves performance 2-7% on single GPU configurations
Resolve corruption seen when enabling Multi-Sample Anti-Aliasing on the AMD Radeon HD 6970 Series
Disables CrossFireX (to resolve negative scaling and image quality issues seen when CrossFireX is enabled)
AMD is continuing to work on a CrossFireX solution for Skyrim as soon as its ready well make it publicly available

Battlefield 3

Resolves intermittent corruption seen when playing the game at specific camera angles

We have a discussion thread open over here.