Jelly Bean is revealed by Google on it’s annual Google I/O Developer Conference. The Next Web revealed that According to Android Police, the rollout started yesterday,
but now that we have official word, it’s safe to say that you should see Jelly Bean coming your way soon.
We’ve started rolling out Android 4.1, Jelly Bean, to Nexus S phones on a number of carriers with more to come. Enjoy! android.com/whatsnew/
— Google Nexus (@googlenexus) July 20, 2012