More good news for owners of Galaxy Nexus smartphones. Those who purchased their devices through the Google Play store or who have flashed the “takju” version of the firmware onto their device should be receiving an over-the-air (OTA) update to bring their device up to Android version 4.1.2. The update mirrors the version that rolled out a couple days ago for Galaxy Nexus devices purchased from sources other than Google Play. Like the earlier variant, it appears this is a minor update that primarily provides some performance enhancements “under the hood” as opposed to new features for users.
If you haven’t been notified yet of the update’s availability for your device, you might want to check in your settings.
source: Android Central