Our colleagues from VR-Zone learned that NVIDIA's upcoming G92 GPU will be made on a 65nm process and will use a 256-bit memory bus:
Now we learned that it is actually the next generation G92, a 65nm performance part supporting PCI Express 2.0 and 256-bit memory interface. G92 performance lies between GeForce 8800 GTS and 8600 GTS so it is not the highest end GPU from the G9x series yet. There might be a G90 which we haven't heard about yet and NVIDIA gave clues that their next generation GPU will deliver close to 1 TFlops of performance in a recent analyst conference. G9x could support Double Precision FP too.