During CES, NVIDIA announced that they plan on integrating their GPU cores with ARM cores to create a new family of heterogeneous devices, much in the line of AMD Fusion or Xilinx Extensible Processing Platform. The first such heterogeneous device will apparently be part of the 2013 'Maxwell' architecture. Since NVIDIA's Tegra line is already based on ARM cores, this now means that all of NVIDIA's chips will feature ARM general purpose cores. There is some more information in this HPCwire
blog post.