Android Studio's engineering team did an AMA on Reddit, and out of it came some statments regarding Java 9, 10, 11 and beyond feature support
https://old.reddit.com/r/androiddev/comments/av3lhx/were_on_the_engineering_team_for_android_studio/ehcpukt/
https://old.reddit.com/r/androiddev/comments/av3lhx/were_on_the_engineering_team_for_android_studio/eheb8sc/