If Google offers official support for a second language on Android, it will almost certainly be another JVM based language like Scala or (my personal dream) Clo

If Google offers official support for a second language on Android, it will almost certainly be another JVM based language like Scala or (my personal dream) Clojure. They can already be used to write native apps, and would allow Google to continue to use Dalvik and the all the tooling surrounding it, which they've invested a tremendous amount of resources in.