While many Android users are looking for updates to Android 4.4 or 4.3, there are still plenty of handsets that will be getting updated with older versions of Android. In this case we are looking towards Sony and T-Mobile. Specifically, to the Sony Xperia Z which will be getting an update to Android 4.2 Jelly Bean beginning today.
The details of the update have been shared on the T-Mobile support pages where they mention the update will be arriving as software version 10.3.1.E.0.191. Aside from simply saying Jelly Bean, this means T-Mobile Xperia Z users will have camera access from the lock screen as well as some software stability improvements and a fix for times when the handset rebooted when dialing a call.
Looking back, Google touted Android 4.2 as being a "new and improved Jelly Bean." This update also included goodies such as wireless display support, gesture typing, Photo Sphere images and Daydream. Android 4.2 also improved on the notification experience -- making them expandable and actionable from the drop down shade. Google Now, which was originally introduced in Android 4.1 was also improved for Android 4.2.
That all having been said, those sporting a T-Mobile Xperia Z now have the usual two options to consider. The first being to sit back and wait for the update notification to arrive and the second to go looking for the update. The first is the easiest (and sometimes safest) and requires the user to simply follow the prompts once the notification arrives.
Those looking for the update now can head to Settings -> About phone -> Software update to try and get the process started. Otherwise, T-Mobile has said the update measures in as a 185MB download and will be rolling out between today and December 18th.