Following the release of its GeForce GTX 460 videocard, Nvidia has a new set of WHQL certified drivers available for download, version 258.96.
Of course the biggest change is that the newest driver release adds official support for the GTX 460 videcoard, but there's more to it than that. Other changes include:
Added support for Nvidia Surround technology
Added support for GTX 400M series of notebook GPUs
Installs Nvidia PhysX System Software v9.10.0224
Installs HD audio driver, version 188.8.131.52
In other words, it's pretty much an all-encompassing update. It's also the last driver Nvidia will ever put out to support Hybrid Power, which is a Hybrid SLI technology supported on the GeForce 9800 GX2 and 9800 GTX series.
The latest release also resolves a fair number of issues across multiple operating systems, both in single-GPU and multi-GPU configurations.