http://www.nvidia.com/Download/index.aspx?lang=en-us GTX580/570 7% improvement in bfbc2... thats me happy!
Running this driver on my 580 now. I didn't realise they were new... just downloaded them yesterday when I fitted the new card. No problem so far.
This update also applies to my GTX260, I wonder if it will make any difference with my card though? Improving the performance of an older card is not going to be one of their priorities I guess?