NVIDIA released another set of official beta drivers for Windows Vista. They are for GeForce 8 line of GPUs, and are available in both 32bit and 64bit flavors, with some more SLI support fixes. This is not a WHQL release, so Windows will prompt you about these drivers not being digitally signed.
Release Highlights:
Add support for GeForce 8600, 8500, 8400, and 8300 GPUs.
Improved 3D performance for single GPU and NVIDIA SLI
Add support for NVIDIA SLI on DirectX 10
Numerous game and application compatibility fixes (see below for some of the top issues)
