I am looking at doing something similar myself to replace my RPi3 with a Ryzen APU in an M350 case or similar. My biggest concerns will be the emulator performance as I have a dedicated PC for Steam. Hopefully the chips will run at the same speeds as the non-APU chips.
It's called Raven Ridge, and it's apparently scheduled for release in the second half of the year. Only up to 4 CPU cores, otherwise should be very similar to Ryzen.
I am looking at doing something similar myself to replace my RPi3 with a Ryzen APU in an M350 case or similar. My biggest concerns will be the emulator performance as I have a dedicated PC for Steam. Hopefully the chips will run at the same speeds as the non-APU chips.