The app ecosystem will be wild, if this succeeds.
I hate Java so much, and so deeply, that I do not develop quick handy little Android apps.
But if I can use a less obnoxious language, the world is going to see some mobile apps for tracking all the push-ups I'm not doing, and all the salads I intend to eat.
Edit: Android is already a huge success, by any meaure, of course. But it can get better without Java.
Edit 2: I do know that cross compilers exist. They still smell like Java, though.