Nvidia recently released forceware version 100.41 drivers and the release notes name compatability for the Geforce 8800 Ultra, which isn’t out. Nvidia hasn’t used the Ultra name in quite a while but this Ultra most likely will be just an overclocked 8800GTX.
I think that the 8800 Ultra will be in short supply similar to how the 7950GX2 was and the 7800GTX 512MB was. If this card is released before ATI even gets a single DX10 capable card out it will put ATI farther behind then most people ever thought they would be.
[via X-Bit Labs]