The biggest update of OS from Google, the Lollipop, has been official for some months now, however very few devices already have it. In fact, Nexus devices, which understandably are way ahead of the pack, are already on the 5.1 update while a lot of other smartphones and tablets are still stuck with good KitKat.
A feew weeks ago Sony announced that, unfortunately, non-Xperia smartphones and tablets will not be upgraded to Lollipop. While enterprising individuals can still root and hack their way into the update, it is still a big risk of course.
But it looks like Sony may be changing its mind. If you own one Xperia T2 Ultra or Xperia C3, which were previously named as some of those that won’t be upgraded, the OEM says you will be next in line to have the Lollipop. Let’s wait for further announcements about the other devices as well.