Honestly, I have no idea. But I'm aware that there are multiple efforts to bring "sane" languages (such as C#, by Xamarin) to Android, others than Java.
> Jailbroken iPhones have had this capability for years
I had no idea about this one, but I don't follow iOS development either.
> I'd expected this would happen...sooner?
I agree with you, but I believe this sort of thing should be backed by Apple (iOS) or Google (Android) themselves.
[EDIT]: formatting