Not quite what you are getting at, but a lot of university-led CS research uses Android. Android hits a sweet spot where it's easy to hack, but at the same time

Not quite what you are getting at, but a lot of university-led CS research uses Android. Android hits a sweet spot where it's easy to hack, but at the same time changes you make are relevant to millions of shipping devices. Security research in particular has a lot of fun with Android, because you can analyse the existing platform, then turn around and build your idea, then turn around and run it on real hardware without too much pain. That does not, of course, necessarily filter into intro CS classes. I have seen a few "mobile development" classes in universities, but they seem to be split between iPhone and Android.