AMD has two new drivers today; the 12.6 WHQL and the 12.7 beta drivers, you can find the full changelog and download links at this page.
Both drivers resolve the following issues:
Using AMD Radeon™ HD 7900 and AMD Radeon™ HD 7800 Series in TriFire or QuadFire configurations with AMD Eyefinity will no longer result in a BSOD when launching a DirectX® application.
Multi-display configurations will no longer BSOD at the desktop on AMD Radeon™ HD 7000 Series GPUs.
Additional fixes for AMD Radeon™ HD 7900, AMD Radeon™ HD 7800, and AMD Radeon™ HD 7700 Series GPUs hanging the system upon entering sleep. Some occurrences of this issue may be related to an outdated motherboard BIOS, however. Please ensure that your motherboard BIOS is up to date.
Resolves AMD CrossFire™ technology scaling issues seen in AMD Catalyst™ 12.4 with The Elder Scrolls V: Skyrim.
AMD Catalyst™ Control Center: Overdrive page is no longer intermittently missing
AMD Catalyst™ Control Center: GPU Activity gauge is no longer intermittently missing
Using AMD Radeon™ HD 7900 Series GPUs in an AMD CrossFire™ technology config no longer results in system hangs after cinematics in Call of Duty: Black Ops
Heroes and Generals: Blocky corruptions in scenes with smoke effects under the DirectX® 11 mode are no longer experienced.
DiRT Showdown: Improves scaling for AMD CrossFire™ technology configurations using the AMD Radeon™ HD 6000 Series
HDMI® audio is no longer disabled if the connected HDTV is powered off/on.
And 12.7 beta promises the following performance gains over 12.4 WHQL:
Depending on the AMD Radeon™ graphics card you have, as well as your usual resolution, you could see many of these performance improvements:
Users can now enable MSAA and SSAA for this title through the AMD Catalyst™ Control Center
The Elder Scrolls V: Skyrim
Up to 25% gain in indoor scenes
Up to 7% gain in outdoor scenes
Batman: Arkham City
App-specific optimizations enable up to +6% performance with AA enabled
Up to +3% with MSAA enabled at high resolutions (e.g. 1080p+)
Total War: Shogun II
4xAA and 8xAA mode received a 15% performance improvement through optimizations in the renderer.
Gains of around 10% through code optimization
Lost Planet 2
Up to 2% performance gain via optimization of the tessellation shader
Just Cause 2
Up to 5% performance gain
Deus Ex: Human Revolution
Approximately 3% performance gain for this title at 1080p+ resolutions
Up to 6% performance gain
Moreover, Catalyst 12.7 included the Video Codec Engine (VCE) to offer hardware-based video encoding acceleration in VCE-enabled applications.