The Guru of 3D posted new GeForce Forceware 263.09 drivers for Windows 7 and Vista. Use them at your own risk.
>> GeForce Forceware 263.09 Win 7 | Vista WHQL (32) download from Guru3D.com
One of NVIDIA's AIBs started hosting a new 263.09 WHQL driver today. The driver is intended for the GeForce GTX 580, but should you feel a little adventurous check out our forum thread where a number of modified .inf files are already hosted to get broader GeForce graphics card support.>> GeForce Forceware 263.09 Win 7 | Vista WHQL (64) download from Guru3D.com
Unfortunately there are no reelase notes as of yet. The driver holds an entire build including the latest PhysX and 3D Vision drivers.
>> GeForce Forceware 263.09 Win 7 | Vista WHQL (32) download from Guru3D.com