As also mentioned here in my comment:
It would be great if the play services in all the emulators could get another update to version 15. There was a major update in April this year from 12.x to 15.x.:
Our app always displays a popup that it needs up-to-date play services to work correctly. That is an obstacle in our appium tests.
And in addition support of newer android os versions like 8 and 9 would be awesome.