Nvidia's ForceWare 100.54 were leaked yesterday. You can find a link to them on Nvidia's forum. They are still marked as beta (and non-WHQL) but a final WHQL version is supposed to be released this week i think. I heard those will be ForceWare 100.56.

These work remarkably well on my 8800 GTS. Performance has improved quite a bit and i haven't seen any graphical glitches in the games i play or apps i use (World of Warcraft, Visual Studio, WPF apps, Windows Media Player etc.)