FUD Zilla found out NVIDIA intends to debut the GT300 GPU in late November:
After digging a bit more, we found out that you can expect to see Fermi officially in late November. This date can easily slip as the engineers work around the clock to make it happen. The first sample is out and Nvidia did show it to some important investors and analysts. Nvidia is adamant that the physics demo is real and not a fake thing.
ATI will enjoy availability and exclusivity on market as it has two month lead but we hope ATI can get more cards out and serve them to early DirectX 11 adopters. Nvidia also told us that GT300 was never really a codename but we don't really care as GT300 definitely sounds better than Fermi.