Yes, we were excited too, but it looks like owners of Verizon's LTE Xoom still have to wait a bit for ICS. The tablet is about to receive a software update (HLK75H) "soon". Verizon's support page doesn't specify when. There's not much to the update, though. Your tablet will now support dual International Mobile Subscriber Identities (IMSI), as well as a bugfix for restoring data connectivity after exiting Airplane Mode.
In other words, this update is for the subset of the already small group of people who own Verizom Xooms that use their tablets for frequent international travel.