After releasing firmware updates for some recently and not so recently launched Xperia smartphones, Sony is reportedly rolling out the Android 4.2.2 Jelly Bean update for the Xperia Tablet Z's Wi-Fi variant.Xperiaguide claims that the company has officially rolled out the Android 4.2.2 10.3.1.C.0.136 firmware update for the Wi-Fi only variant of the Xperia Tablet Z SGP311 and SGP312. The site notes that Android 4.2.2 10.3.1.C.0.136 firmware update for the tablet is a major update, compared to the previous ones and is a 786MB download. The site also notes that users in UK and France have confirmed receiving the new update on their Xperia Tablet Z device. It is available via the PC Companion desktop tool. Some of the major highlights of the latest firmware update include multi-user support, a Notification bar added at top of screen with Quick Settings options, support for 64GB microSD cards, a Semi-transparent bar in the lockscreen and the addition of a new kind of widget functionality on both the Homescreen and lockscreen.