It appears like the wait won't be much longer according to this article. Performance is "apparently" on par with the 480 so it's definitely something to look forward to, especially us folding folk. Anyways, a link for your enjoyment:
NVIDIA GeForce GTX 570 on December 7th, Specifications Leaked by VR-Zone.com
NVIDIA GeForce GTX 570 on December 7th, Specifications Leaked by VR-Zone.com