The Jelly Bean update will bring considerable changes form the existing Android operating systems such as the new Photo Sphere feature in the camera app that will let users take great panoramic photos with 360 degree coverage. Apparently, the camera app lets you click photos in every direction and then stitches all those images together to form a sphere.
Google has also tried to improve the native keyboard's effectiveness. Android 4.2 brings Gesture Typing which, in a way, mimics the mechanism of Swype. One simply has to glide a fingertip over the letters and it will show up a list of words by predicting the most likely ones.
The text-to-speech libraries have been tweaked to be more accurate and relevant. Voice typing has also gets better with this update and it would now work without a data connection too.
The notifications tray now offers quick settings that can be accessed by swiping the screen from top to down. Quick Settings is like the mission control panel where the user can quickly switch a feature on or off. For instance mobile data, Bluetooth (http://www.themobileindian.com/
Apparently the notification updates are now expandable and the relevant action can be taken directly from the bottom of the notifications.
Google has tweaked the transitions and graphics a bit more to make them enjoyable without any hiccups or lag. Even the lock screen will now be able to host your favorite widgets.