A billion here, a billion there - pretty soon it adds up to real money. ',Senator Everett Dicksen (1896-1969)" - 1 "279"
As for performance improvement, the new driver speeds up the 3Dmark06 and you can expect that the overall performance will improve from 6.7 to 23.7 percent with anti-aliasing. ATI claims that it improved the Hyper Z efficiency for Radeon X1300, X1600 and X1800 generation of cards. The largest gain is on Crossfire configurations with 256MB cards and resolutions of 1280x1024 or higher.
On Radeon, the whole range of Radeon X1000 cards Doom 3 scores improves for up to 9.3 percent. It is due the further OpenGL Shader compiler and transform and engine optimisation. The largest gain is on Radeon X1900 cards and 16x12 or higher resolutions.
The new Linux 6.9 driver also known as 8.29.6 includes support for Linux Kernel 2.6.18. You can find the windows driver here while you can get the Linux one here or 64 bit Linux one here. If you really want to see what exactly ATI driver team fixed in this release check it here. µ