Performance improvements
 * S.T.A.L.K.E.R. - Clear Sky
 o Improves up to 6% with ATI Radeon HD 5970 graphics products
 o Improves up to 3% with ATI Radeon HD 5800 graphics products
 o Improves up to 3% on ATI Radeon HD 5700 Series products

ATI Catalyst - Video enhancements

 * H.264 Level 5.1 support
 o ATI Catalyst can now playback 5.1 level streams on all support players
 o Allows for playback of high resolutions (4Kx2K)
 o Mosquito noise removal
 o Reduces mosquito noise seen in highly compressed progressive video, during playback .
 o Supported on the ATI Radeon HD 5000 Series and ATI Radeon HD 4000 Series of products

AMD video transcoding updates
 * This release of ATI Catalyst provides enhanced support for the Windows 7 Drag and Drop video converter
 o Performance improvements
 o New formats supported (H.264 file formats - MTS and WMV9 Complex profile interlaced content)
 o ATI Catalyst Control Center option for enabling/disabling GPU acceleration
 * Support for the ATI Video converter is now available in the advanced view of the ATI Catalyst Control Center

Resolved Issues: Highlights
 * Desktop mouse cursor will no longer intermittently appear enlarged
 * Pressing the "Page Down" button while configuring the last display in Eyefinity group will now properly switch to the next display instead of closing the bezel user interface
 * Shortcut keys to configure the bezel now functions properly
 * "Battlefield 2: Bad Company" maps no longer takes unusually long to load for ATI Radeon HD 5000 Series
 * Performance on 2D applications and benchmarks has now been fixed
 * Flashing no longer visible in "Shattered Horizon" game with CrossFire enabled
 * Changing in-game resolution in "Alien vs. Predator" no longer causes screen flickering under multi-GPU configuration
 * Tint setting under Catalyst Control Center - Basic Color now displays smooth transition when adjusted for Blu-ray playback
 * In-game anti-alias now functions properly when other in-game options like Volumetric Effects are enabled in "Empire: Total War" and "Napoleon: Total War"games
 * Flickering corruption and flashing textures are no longer visible in "Battlefield 2: Bad Company"

Highlights of the Linux ATI Catalyst 10.4 release include:

Support for new Linux operating systems
 * This release of ATI Catalyst Linux introduces support for the following new operating systems:
 Ubuntu 10.04 early look support