They are currently being worked out with there next lot of APUs coming out dont fret just wait for a bit. They are due soon heaps are asking the same question from what I been told they are working on them as they are working on drivers & bios updates for the 2nd gen Ryzens at the same time.
You and me both, i am very very disappointed in the lack of support for the APU line up, i have the 2500U best and ONLY drivers are alpha from 7 months ago. 17.7 drivers are horrifically out of date to the point even Intel are doing a better job! Sure i can hack the drivers so i can get decent performance in games, and so i can even run some of the others, but there are other issues mostly desktop related with video players etc.