The most interesting variant of the Tegra 4 appears to be the SP3X. This version has an ARM Cortex A9 configuration with a clock range of 1.2 to 2.0GHz. But most importantly, this Tegra 4 model seems to support LTE. You might recall that it is the lack of such support on the current iteration of the NVIDIA Tegra 3 that kept quad-core performance out of AT&T's version of the HTC One X.
While it is nice to have this roadmap laid out in front of us, we remind you that healthy bit of skepticism might be in order here.
source: VR-Zone (translated) via Engadget