A slide detailing Nvidia's upcoming Tegra 4 SoC has been leaked out, showing the specs everyone wanted and hoped for. A user on the Chinese site Chiphell posted the above slide showing off the features of the new chip, and when combined with the things we already know we have a really good idea of what is to come.
The Tegra 4 will be a 28 nanometer ARM Cortex-A15 quad-core (4+1 as seen in the Tegra 3) system on chip. The A15 architecture is the next generation of silicon, and is already being used in the Exynos 5 as seen in the Nexus 10. The lower power draw and faster processing speed make a remarkable difference when you need it.
The GPU is a whopping 72 core GeForce unit, bringing six times the graphical performance of the Tegra 3. With support for a full 2560x1440 24 bit color display and native hardware decoding for video, it should be able to handle anything you could throw at it in a tablet.
Source: Chiphell (Chinese)