More ATI Radeon 4800 launch details
 

We previously published several details about AMD’s next-generation graphics card lineup and as we get closer to the launch we are getting more details about the launch date, feature set and prices. The good news: The new boards will come with “physics processing capability” and prices that will start below $200 for a 512 MB board. The bad news: The 4800 series will launch after Nvidia’s GT200.

http://www.tgdaily.com/content/view/37453/135/

the launch prices of only 279 $ doesn't make me very optimistic about the performance

If it surpasses 3870X2 performance; at that price, 9800 GTX is history:)