VR-Zone Chinese has leaked spec sheets on NVIDIA's upcoming system-on-a-chip (SoC) detailing the next-generation of Tegra chips codenamed "Wayne". We should expect four different Tegra 4 models in 2013, all using the same 4-PLUS-1 tech from NVIDIA.
We have two "Flagship" models, the first of which should drop in Q1 2013 dubbed "T40" and will clock in at 1.8GHz and be made from the Cortex-A15 architecture, the second Flagship model is the "T43" and clocks in at 2GHz, this is from the same Cortex-A15 tech. We then have two "Mainstream" products that should arrive in Q3 2013.
These two models are "AP40" and "SP3X", with the latter coming in between 1.2-1.8GHz, and the former arriving in 1.2-2.0GHz. They will be based off of Cortex-A15 and Cortex-A9 designs for the AP40 and SP3X, respectively. One thing to note of the SP3X chip, is that it will finally bring with it LTE connectivity in the form of LTE100/HSPA42 tech, it will also be designed for 7-inch tablets, with the other three models made for 10-inch designs.
It's pretty far out, and having to wait over twelve months to see LTE connectivity on an NVIDIA Tegra-based smart device is pretty lame in my opinion. The tech world will change so much between now and then.