Google has unveiled, well not really a major update, but Android 4.2 Jelly Bean. It's like Android 4.1 JB but Google took the OS to a whole new level with 4.2 JB. This version of the OS runs on the new Nexus 4 and the Nexus 10. One of the major things that is added into 4.2, among others, is Photo Sphere (or an improved camera software) which allows users to take 360 degrees panoramic shots inspired by Google Maps' Street Views. But unlike other panoramic shots by other OS-es, Android's Photo Sphere takes shots up, down, left, and right. I don't know how that works but by how it sounds, is neat. You can check out some Photo Sphere photos taken by users here.
Here are some of the great features included in Android 4.2 Jelly Bean:
Of course, Photo Sphere.
There's a "smarter keyboard" incorporated into the OS. Looks like it's Swype but Google termed it as Gesture Typing, which works just like swype. At least it is already a built-in feature in the OS.
"One tablet many users". Self explanatory right? Yes, Google added the ability to the OS where two or more users can customize their own little space in one tablet.
There's Google Now which, I believe is improved. You can check out the new stuff on Google Now on its own landing page.
A feature that has been incorporated into other OS-es, Android's Notification bar is now being improved (as if it has not been improved over time). With the new notification bar, users can now expand and control on each notification displayed on it.
There are more in 4.2 JB so check it out here.Here's the Photo Sphere in action: