A set of leaked images seems to confirm NVIDIA is getting ready to release a new Shield TV console based on its Pascal architecture.
The device looks largely similar to the old Shield, but is believed to feature a new Tegra SoC based on the Parker design, which means Pascal GPU cores and two Denver CPU cores.
The new SHIELD would most likely be equipped with Tegra based on Parker design (with Pascal GPU and Denver 2 cores). So that means 256 CUDA cores, just as many as Tegra X1, but more power efficient thanks to 16nm FF process.
Besides the internals, another difference is that the new controller is smaller than its predecessor and has a polygonal-design. VideoCardz speculates NVIDIA boss Jen-Hsun Huang will show off the device at his CES 2017 keynote in January. Hopefully we'll also see some other things like the GTX 1080 Ti.