There's a new ForceWare 175.19 driver release out for GeForce 6, 7, 8, and 9 graphics cards. Nvidia's official release notes for Windows Vista (PDF) and Windows XP (PDF) list no major changes compared to last month's 175.16 release, but Nvidia has apparently fixed a handful of bugs for both single- and multi-GPU configurations.
Bug fixes in Windows Vista span Painkiller: Overdose, Splinter Cell Double Agent, and S.T.A.L.K.E.R.: Shadow of Chernobyl, while the Windows XP fixes cover Tiger Woods PGA Tour 2007, Lego Star Wars 2, Sid Meier's Railroads!, and HDTV-related issues. You can check out a detailed list of bugs and remaining problems in the aforementioned PDF files.
Nvidia offers the new drivers in Windows Vista x86, Windows Vista x64, Windows XP x86, and Windows XP x64 flavors. Folks with GeForce GTX 200-series cards will want to head to this page and grab the 177.35 drivers, though.