A Verizon Galaxy Nexus user has received an update notification for his rooted phone and managed to pull the over-the-air refresh, making it available for everyone.
It seems like Verizon is not pushing out this update to the masses and, according to reports, it could be some sort of internal test build. However, if you feel the need to install it you should note that this is only for the Verizon Galaxy Nexus and the phone needs to be stock and having stock recovery. The platform version is Google Android 4.0.4 Ice Cream Sandwich and the build is IMM30B. You can grab the goodies from here, though you’ll be doing so at your own responsibility.