Weeks ago, when the Android 4.2 update arrived for the latest Nexus devices, there's been a considerable number of Android users complaining about the "December issue." This has prevent users from using the month of December in some of the date-centered apps. Now, Google has rolled out Android 4.2.1 update to patch things up.
This update is not just for the December bug issue, it also packs in Bluetooth enhancement and other existing tiny loop holes in the Android ecosystem in a 1.1 MB file size. Minute as it is, Google is on the right track in polishing the once flawed OS in a short span of time.
So for those you who owns the LG Nexus 4, Asus Nexus 7 and the Samsung Nexus 10; try checking in updates once in a while and install that bug fix before December comes.