Well, we have already heard that the Google has started rolling out the Android 4.2.2 update for their Nexus devices, and it looks like that the update is rolling for the devices which includes the Google Nexus 4 and the Samsung Nexus 10. However, one thing is confirmed i.e. the Nexus 7 has received the Android 4.2.2 update. The update involves improvement in performance, stability fixes and allegedly fixes a bug which is linked to streaming music over wireless connection i.e.e Bluetooth.
Google has however, not officially announced the update yet, but it seems that the update is still rolling out in some places. According to TheInquirer, the Nexus 4 seems to be getting the update, while the Information Week regrets and says that there is no word on if or when the update will reach the Nexus 4 smartphone. Also, this update is expected to be the last Android 4.2x update, as Google will be soon announcing the next major release of their Google Mobile OS i.e. the Android 5.0 at Google I/O Conference in May 2013. So, along with the Nexus device Android device, we also have to look for something else too. Stay tuned for more updates.