SemiAccurate reports that Nvidia is working on two GPUs based on the GK114 and GK114-GX. As of yet, it's unknown whether these chips will both be developed fully, or whether a single chip will be used for both mid-range and high-end graphics cards, as the manufacturer has done with its current Kepler models. The GK104 chip will also be revised, updating the architecture with the latest technologies.
found so i thought i'd share. it seems nvidia's upcoming models are roughly 15% faster than the current generation, which means i will be buying one of the 800 series goodness.
source: http://uk.hardware.info/news/30705/nvidia-gtx-700-series-arrives-no-sooner-than-march-2013