The Android 4.2.2 update has now started to roll out to the various "yakju" Galaxy Nexus phones. If you're not familiar with the term, yakju is a tag placed on the versions of the GSM Galaxy Nexus that were sold through channels other than Google Play. Phones sold from Google Play were labeled "takju," and on the software side the only difference is the inclusion of Google Wallet. The thing that matters here is that takju devices have historically received updates well before yakju devices -- today's news of a yakju OTA this close to the takju version is a rare sight.
Why am I telling you all this? We now have manual download link for the yakju GNex, and people (maybe even you) are going to be digging out USB cables and manually updating. I have a better idea for folks who want to get their hands a little dirty at the command line -- flash your phone to the takju version so there's no wait for the next OTA.
Any GSM Galaxy Nexus can run it, Google Wallet is baked right into the ROM (important if you're in the U.S.) and it puts you on the same software and update schedule as the phones from Google Play. It's also kind of fun. The down side is that you'll be starting from scratch, but a fresh install always feels good.
The method is covered right here if you're interested, and I promise that if you're able to manually update your yakju phone, you can flash the takju software and manually update as well. If you don't feel like fooling with it, that's cool, too. Here's the manual download link for the yakju 4.2.2 OTA, and you can sideload it with one of the existing methods. Hit the forums if you run into trouble.