My Galaxy Nexus now runs Android 4.1 Jelly Bean. All had to do was go to Settings, About phone, Updates. The update was there. It was automatically downloaded and installed. No problem what so ever. The phone does seem to work faster afterwords. The new Google Now service looks interesting, but I need to use it more to see if it actually works for Cyprus. If you are interested in features and reviews, have a look this Engadget post.