We're developing out Android app in Kotlin! It is a very promising language and as others have mentioned, the IDE support is superb, first class. Easy learning curve if you already know another language.
And since Kotlin also compiles to JS, we're writing our REST api client in it so that our Android app and web product can somewhat share the same codebase.
And since Kotlin also compiles to JS, we're writing our REST api client in it so that our Android app and web product can somewhat share the same codebase.
I think Kotlin can potentially go mainstream