Last Updated: February 13th, 2013
A couple of hours ago, Google started rolling out the Android 4.2.2 update to a very limited subset of Nexus devices (build JDQ39). At this point, almost nobody can get the OTA pulled by going through the Settings screen, but don't worry - one of our loyal readers extracted the OTA url for the Galaxy Nexus and sent it over to us (great work, Daniel Koch!).
For now, we only have the link for the takju Galaxy Nexus variant, i.e.
Last Updated: February 12th, 2013
Just after users began reporting that their Galaxy Nexus devices were receiving an update to Android 4.2 Jelly Bean (build JOP40C, to be precise), it looks like the manual update package is available for download. As could be expected, this coincides almost perfectly with the launch of Google's newest additions to the Nexus family – the Nexus 4 and 10.
Of course, it's worth reiterating that this is an update specifically for the Galaxy Nexus' Takju variant – that means only Galaxy Nexus handsets bought from the Play Store need apply (we're still waiting to hear about the Yakju variant).