There is no "Official" update for Verizon to get 6.1 (yet). What is available are several Roms and Kitchens that let you load 6.1 onto your phone. They also activate the GPS ability in the phone, though it is not as fast locking as Sprint.

Check the upgrade forum, it is a sub forum of this one. You can find info on flashing your rom, updating your radio, and all the risks associated with doing this process there.