Digitimes has confirmed that Nvidia plans to launch Geforce 8800GT on the 29th just as we said it will do here.
These guys believe that Nvidia changed the plans but end of October was the plan that is at least two weeks old if not even more. Partners are printing the boxes, checking the samples and production is on the way. The cards will be ready at launch.
Nvidia G92 GPU launch brought forward (Digitimes)
Our own Geforce 8800GT picture
G92 might be a high mainstream part