NVIDIA has a new series 258 drivers out on the web, this is revision 258.19 which carries support for a large amount of GeForce graphics cards.
The 258.19 driver includes the PhysX system software, the HD audio 1.0.9.1 driver, and has support for GeForce 6, 7, 8, 9, 100, 200, 300 and 400 (GTX 465 too) series desktop cards, and the ION GPUs.
A specific change log will follow later on. We have a discussion thread open on these drivers right here.
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ForceWare 258.19 WinXP 32-bit WHQL
ForceWare 258.19 Win 7 | Vista 64-bit WHQL
ForceWare 258.19 Win 7 | Vista 32-bit WHQL