It's coming to your phone very soon. It already started pushing out. Just be a little patient.
|Nexus 4 (Photo credit: abuakel)|
This is also considered the last update before Key Lime Pie. But this could take a while and is only valid if there is no need for any security update.
I hope you'll get your update soon.
I don't even get 4.2 on my Nexus S and I'm stuck at 4.1.2. So while you throwing a 4.2.2 party to celebrate, I desperately duck in the corner an whine. :)