I will start with mine.
Earnings from apps without purchasing installs will further decline. Wearable tech markets and ecommerce will get more exposure. I also feel HTML5 will still be just a threat to app stores without causing any real harm to them.
I need to build expertise in android studio and unity.
I hope Android TV will be getting more important although probably won’t get popular yet. Google Play will slowly stale like iOS store making it really hard for new players to survive after the first 30 days.
I think Android wear will get more applications ! People will start taking their attention towards the Android wears rather than rather than the smartphones !