Highlights of the ATI Catalyst 10.9 Windows release include:

Performance improvements

STALKER: Call of Pripyat Benchmark
o Performance increases up to 20% on ATI Radeon HD 5800 Series single and CrossFire configurations with Enhanced full dynamic lighting (DX11) and anti-aliasing enabled
o Performance increases up to 12% on ATI Radeon HD 5700 Series single and CrossFire configurations with Enhanced full dynamic lighting (DX11) and anti-aliasing enabled

The Chronicles of Riddick: Assault on Dark Athena
o Performance increases up to 4% on ATI Radeon HD 5700 Series single and CrossFire configurations
o Performance increases up to 4% on ATI Radeon HD 4800 Series single and CrossFire configurations
o Performance increases up to 5% on ATI Radeon HD 5800 Series single and CrossFire configurations
o Performance increases up to 6% on ATI Radeon HD 5970 Series single and CrossFire configurations

Catalyst Application Profiles

Aliens Vs. Predator – Profile update
Battlefield: Bad Company 2 – Profile update
F1 2010 – Profile update
Kane & Lynch 2 – New profile
Support for the Internet Explorer 9 Beta release

AMD’s graphics processors deliver graphics acceleration through Direct2D and HTML 5 for the Internet Explorer 9 beta release
Be sure to check out AMD’s website for an example of GPU acceleration within Internet Explorer 9 (http://www.amd.com/direct2d-html5)
Resolved issue highlights:

UVD clocks will now return to normal speeds after switching from HD to SD content
Flickering no longer visible while running 3D games on HDMI displays with Quad CrossFire enabled
Mesh corruption is no longer visible in "The Chronicles of Riddick 2: Assault on Dark Athena" when SSAO in-game setting is set to high
CrossFire now functions properly and in-game Anti-Aliasing can now be enabled in "StarCraft II"
Adobe Flash Player will no longer display green screen after resume from sleep
Negative CrossFire scaling on "Final Fantasy-XIV" no longer occurs
Intermittent perfomance drops no longer observed with harware cursor enabled in"World of Warcraft" game in extended mode