A few days ago, Google pushed out the Android 4.2.2 (build JDQ39) update to the takju variants of the Galaxy Nexus. Takju Nexuses are the devices sold in the Google Play Store, whereas yakju ones can be found in other retail channels. Good news for those waiting on the latter - though a day after its sibling, we finally have the yakju OTA file that can be applied manually on any stock device, including unrooted ones with stock recovery.
If you're not sure whether you have a takju or yakju variant, download Nexus Update Checker from the Play Store and see what it says.

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Here's The Android 4.2.2 JDQ39 Update For The Yakju GSM Galaxy Nexus [Manual Installation Instructions] was written by the awesome team at Android Police.