Google had submitted the JRO03H 4.1.1 ROM to Verizon for testing (it was leaked here back in early August), but now that 4.1.2 has come out, I'm sure Verizon is testing that ROM now. On Motorola's official update page, it lists the VZW Xoom as getting Jelly Bean Q4 of this year, so it should be any time now...unless they're just going to wait for 4.2, then submit THAT for testing and have it be our official JB update...which means longer waiting. Ugh.
Owning a Verizon Xoom and Galaxy Nexus is very frustrating from an update standpoint. Updates direct from Google, but only after Verizon tests the ROMs and approves it for rollout. If only Verizon's network wasn't so goddamn awesome and the LTE so freakin' fast.