You don't have to wait for Verizon to roll it out -- just follow the read link and look for the XV6700-related files on UTStarcom's site (user beware, of course, since this hasn't been announced).
That very group should be delighted to hear that UTStarcom appears to have an official Windows Mobile 5 AKU3.3 update (you know, the one that was hacked for the handset many moons ago) available, which we would imagine means Verizon should be offering it directly before too long.