If you are running Windows 8 and an NVIDIA graphics card on a desktop machine then you should head on over to NVIDIA to grab the WHQL certified GeForce 302.82 for 32-bit and 64-bit versions of the pre-release OS. If you are on a laptop then NVIDIA suggests you should continue to use the 302.80 drivers for the moment.
You will see a new NVIDIA Control Panel page that allows you to set up stereoscopic 3D for 3D Vision. The drawbacks are few, the driver will request a reboot in order to finish the installation, which you should do whether you are asked or not, and there is an issue for users of the GT520 who enable FXAA via the NVIDIA control panel but other than those two addendum, NVIDIA posted no other known issues. As it is a WHQL version, you can expect it to be stable and to be around for a bit as the release date of Win8 slowly approaches.