According to legend, the Nvidia code Wayne Tegra 4 of 28nm process chip has been developed in this month completed to OEM manufacturers to provide a sample. The CES, they very likely will be grand launch.
CES2013 Tablet PC Product Preview:
Tegra 4 (Wayne) and the other two new products
It uses the ARM Cortex-A15 prices, core frequency of 1.5GHz-2.0GHz. The GPU, Tegra 4 integrated 64 CUDA Core, core frequency of about 500MHz. The Qualcomm APQ8064 six times the performance, TI OMAP 4 times.
All the numbers fit with the current Kepler discrete Graphic cards. Multiples of 32!