New WHQL drivers from Nvidia have been released today, with version 177.41 put up for download from Nvidia's site. The updated drivers are available for Windows XP and XP 64bit, Windows Vista and Vista 64bit, and Server 2003. There is no updated driver package for Linux users, obviously, as WQHL certification is irrelevant on that platform. The last Linux driver update was two weeks ago with version 177.13.
The new drivers add support for the latest Nvidia GPUs including the GTX 280 and GTX 260 units as well as the 780a SLI and 750a SLI. They made some changes to the Nvidia control panel for HDMI input, bug fixes for Vista 64bit and multi-GPU cards and more.