The latest version of the AMD Catalyst software suite is designed to support the following Microsoft Windows
platforms: 

• Windows 7 32-bit version
• Windows 7 64-bit version
• Windows Vista 32-bit version
• Windows Vista 64-bit version
• Windows XP Professional
• Windows XP Home Edition
• Windows XP Media Center Edition
• Windows XP Professional x64 Edition

The following performance improvements were observed with this release of AMD Catalyst 10.11:

Battleforge: Performance increases up to 3% on ATI Radeon HD 5800 Series single and CrossFire configurations with anti-aliasing disabled.

STALKER – Call of Pripyat benchmark: Performance increases up to 5% on ATI Radeon HD 5800 Series single and CrossFire configurations

• Running fullscreen DirectX 9 applications/games after enabling Aero effects and rebooting no longer causes the system to randomly stop responding
• Primary display no longer blanks out intermittently during "World in Conflict: Soviet Assault" DirectX10 gameplay with CrossFire and Dual Monitor enabled
• "Stone Giant" DirectX 11 demo no longer intermittently fails in fullscreen mode with CrossFire enabled under Multi-GPU configurations on some cards
• Task switching out of "Battlefield: Bad Company 2" and then back into the game  no longer causes CrossFire to become disabled 
• Enabling in-game Anti-Aliasing and utilizing Edge-Detect filters no longer causes smoother lines but blurry textures when compared to the Standard filter on some cards
• Desktop line corruption is no longer observed after hotplugging the HDCP display on some cards
• Enabling Overdrive through the Catalyst Control Center for single display systems no longer results in GPU clocks running at high levels in non-GPU intensive scenarios  

Resolved Known Issues for the Windows Vista  Operating System 

• Running fullscreen DirectX 9 applications/games after enabling Aero effects and rebooting no longer causes the system to randomly stop responding
• When "World of Warcraft" is launched via TriDef 3D and hardware cursor is enabled, the mouse cursor no longer intermittently flickers and disappears
• Hot swapping a HDCP display panel with a non-HDCP display no longer  causes the  display to turn blank after resuming from sleep/hibernate during Blu-ray disc playback

Known issues under the Windows 7 operating system 

• Task switching to desktop and then back into "Far Cry 2" DX10 game may result in performance drop with CrossFire enabled under Multi-GPU configurations
• Drag and Drop transcoded H264i content may show de-interlacing lines
• Display may intermittently turn blank on launching "Enemy Territory: Quake Wars" or during game play under Multi-GPU configurations on some cards
• With CrossFire enabled, flickering may be observed in OpenGL games when refresh rate is set to 100Hz or higher on some cards
• Desktop may dim after exiting "Mafia II" game on some cards
• Under multi-adapter configuration, various rotated displays in Eyefinity set up might not be retained after reboot
• Mouse cursor may intermittently be corrupt/missing in one of the displays under Eyefinity configuration while playing games/samples
• Tearing corruption may be visible in specific "StarCraft II" game campaigns at low resolution settings (1024x768) on some cards
• Switching from 32-bit to 16-bit colordepth during WMV media playback may cause the video to go blank on some cards
• Enabling CrossFire in "Far Cry 2" DirectX 9 may result in low performance and benchmark failing to complete on some cards
• "Tom Clancy's Endwar" may stop responding during game cut scenes on some cards
• Enabling anti-aliasing in "StarCraft II: Wings of Liberty" may cause outline highlights to be rendered incorrectly on some cards
• Green texture corruption may be observed when resolution/video settings are changed in "Metro 2033" game in DirectX 10 and 11 mode on some cards
• Rebooting a system with a CRT connected to the MiniDP port may cause all resolutions except 640x480 to go missing
• Windows Media Center application may stop responding or system may intermittently fail while playing 1080p video in 2x2 & 4X1 Eyefinity mode
  

Known Issues under the Windows Vista Operating System 

• Corruption might be visible in "Doom 3" and "Quake 4" with ATI Radeon HD 4700 Series
• All but the primary display under Eyefinity configuation might become disabled while changing the preferred display at lowest Bezel compensated resolution
• Performing bezel compensation on 3x2 Eyefinity configuration may cause the bezel group (resolutions) to go missing

Known Issues under All Windows Operating Systems 

• Catalyst Control Center: Enable dialog reposition does not show on proper monitor when system is configured with 4 displays
• Switching the preferred display in specific Eyefinity configurations may cause the displays to become disabled