AMD's Catalyst 11.5 drivers are out in both Windows and Linux flavors. Feature highlights of the Windows-flavored versions are HydraVision enhancements for Eyefinity configurations which now contain:

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The HydraGrid feature found in HydraVision is now aware of user created Bezels

The HydraGrid feature found in HydraVision now also includes as "Automatic Grid" option that aligns to the user defined Eyefinity display layout.

Linux-flavored AMD users get feature highlights of new support for operating systems, openSUSE 11.4 support (production) and RHEL 6.1 support (early look).

AMD didn't just stop at Catalyst 11.5 drivers, they've also unleashed AMD Catalyst 11.5a hotfix which includes a bunch of goodies:

Includes performance optimizations and resolves various quality issues for the upcoming release of Brink™

Resolves various transcoding video lagging issues seem when converting multiple H.264 clips to MPEG2 Blu-ray video

Resolves the intermittent mouse cursor lag issue seen by some users

Resolves intermittent flickering issues seen in the following applications in a system using an AMD Radeon™ HD 6600 series graphics card with DDR3 memory and running in DirectX® 9 mode:

Civilization 5

Dead Rising 2

Fallout 3

Mafia 2

NBA 2010

ShenGuiChuanQi

Starcraft 2

Warcraft III

World of Warcraft