The most interesting ones are S905X2 and S922.
The S905X2 is the successor of the popular S905X and sports a new dual core GPU named “Dvalin”.
The S922 is based on next-gen ARM CPU and features also a new more powerful GPU capable of decoding two 4K streams. It also supports USB type C.
Both of them support Dolby Vision/HDR10+ and are described as ultra low powered.
TV boxes equipped with the new SoC are not expected before Q2 2018.
Our source of information was the all-time legit, cnx-soft