Along with performance improvements and adaptive AA, bug fixes are also on the menu for the new Catalyst 6.5 release. Issues have been resolved for 3DMark 2005, Aquamark 3, Doom 3, and Far Cry, as well as the Catalyst Control Center, TV input and output functionality. A more detailed list of fixes and known issues is available in the release notes.
In addition to its new Catalyst drivers for Windows XP, ATI has also released a Catalyst Beta 2 driver for Windows Vista. The driver coincides with the Beta 2 release of the upcoming OS, and offers support for ATI's entire line of DirectX 9-compatible graphics, multimedia, and chipset hardware. Windows Vista testers can download the Beta 2 driver here.
Update: ATI has also reworked the "Chuck patch" for the new Catalyst 6.5 drivers. The Chuck patch allows users to enable both high dynamic range lighting and antialiasing with Radeon X1000-series graphics cards in The Elder Scrolls 4: Oblivion. The download page for the Chuck patch still mentions Beta 6.3 Catalysts, but ATI assures us that the patch has been updated to take advantage of the Catalyst 6.5 release.