Google today began pushing Android 4.2.1 to the Nexus 4 and Nexus 10 .
We’ve not yet been able to confirm whether 4.2.1 is also hitting the Nexus 7 or Galaxy Nexus, but we’re sure these devices will get this latest update soon if it’s not already going out.
The update fixes the notorious “December birthday” bug, which prevented any date in the month of December from being selected as a birthday or anniversary in the People app. So far we haven’t noticed any other differences in the new software, which carries the build number JOP40D.
The update is being rolled out gradually over the air.