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JIT for the new cards, Catalyst 8.6 is out (it wasn't when I checked last night). Substantial performance and feature boosts again, including

Call of Duty 4: Performance increases across the ATI Radeon™ HD 3000 Series and the ATI Radeon™ HD 2000 Series of products, with performance gains as large as 35% in specific maps.

New features

OpenGL Adaptive Anti-Aliasing Custom Filters support
This release of Catalyst™ introduces Adaptive Anti-Aliasing Custom Filters support for OpenGL applications for the ATI Radeon HD 3000 Series, ATI Radeon HD 2000 Series of products. Using the Edge Detect Custom Filter, users can enable 12X and 24X Anti-Aliasing. Selecting 4X Anti-Aliasing plus selecting the Edge Detect filter delivers the equivalent of 12X Anti-Aliasing. Selecting 8X Anti-Aliasing plus selecting the Edge Detect filter delivers the equivalent of 24X Anti-Aliasing.
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Catalyst Install enhancement – No reboot required after Catalyst upgrade install
This release of Catalyst™ introduces an enhancement to the Catalyst installer. Users are no longer required to reboot their system after Catalyst has finished installing (as long as the installation is an upgrade from a previous Catalyst install).

Drivers

Release notes on the driver pages.