Next-Gen GPUs?

Anyone know of any mags or links that discuss the next gen of video cards from ATI/nVidia. The x1xx and 7xxx series have been out for a little while now and i think they are almost done milking them.

I heard ATI has a x1950 on the horizon. but im ready to invest in the next-generation of technology. so whats the word on it?

late september-ish for the Nvidia G80 (which will probably be the Geforce 8900 GT or maybe some far sillier name), and I think november-december-ish for the ATI R600.