NVIDIA is working on a new G92 GPU. FUD Zilla writes this will be a 65nm version of the G80 GPU with significantly higher clockspeeds and PCI Express 2.0 support:
The card is suppose to be launched sometimes in early Q4 to meet the Xmas shopping madness and Nvidia is still on schedule.
PCIe 2.0 is the new specification that lets graphic card manufactures to get more power for its graphic card and with this new standard Nvidia and ATI can enjoy about 300W per graphic card. Intel X38 chipset and ATI's RD790 and variations should support this standard and Nvidia will have one of its own soonish.