According to Fudzilla, the new drivers generally improve DirectX 10 performance, resolve a number of known driver issues and add multi-GPU support to Folding@Home.
The same source credits the new drivers with improving performance in Crysis Warhead by up to 20 percent, World in Conflict by 5 percent, as well as improving FEAR 2’s performance on multiple GPUs. All improvements noted refer to DX10 mode.
The drivers are available on ATi’s website here, along with the full release notes detailing the changes implemented.