Verizon Galaxy Nexus users now can update their Device as Jelly Bean (JRO03O) update leaked out. User named oldblue910 posted the update on XDA-Developers forums and is ow available for download. Update is ready-to-install upgrade for those running a stock, unrooted GNex with current software version IMM76Q. We have no information regarding official update from Verizon.
Download: Google Link