Very strange that the "new" 8800 GTS will retain the 256-bit interface of the G92, and come with (probably) 512 or 1024MB of ram, giving it a slower bus than the 320-bit G80 GTS.
Regardless, the GTS is supposed to trump the performance of even the 8800GTX, so we can presume that a new (or at least refreshed) flagship GPU is somewhere near in the pipeline.