Fix December Bug on Nexus 4, 7, 10 and Galaxy Nexus Rolled Out as Android 4.2.1 JOP40D

The famous "December birthday" bug on Google's earlier Android 4.2.1 JOP40C released will come to an end. According to reports that Google has just started pushing an incremental update that only targets to fix the missing December on a calendar month when setting events like birthday, anniversary, and etc in the apps on Nexus 4, Nexus 7, Nexus 10 and Galaxy Nexus.

It's said that already rolled out but so far as I checked the availability of the factory images but to no avail this time, probably they will post it soon. So, just check it out via OTA (over the air updates).

Android 4.2.1 JOP40D Changelog:

Project: platform/build
d4382dd : bump version to 4.2.1
476750c : JOP40D
Project: platform/external/bluetooth/bluedroid
0d15318 : Add HID gamepad/joystick as supported HID devices
Project: platform/frameworks/base
b361b30 : Revert “NumberPicker should adjust min and max when displayed values are set.” (a.k.a. Santa is back)
cc2e849 : Notification vibration improvements:

Source: Android Central