Nethaera: The Wrath of the Lich King invitations have started to go out, and we have officially begun the beta test. As with The Burning Crusade, the beta-test process for Wrath of the Lich King will occur in phases, during which we will be inviting players who have opted-in to participate.
Players who have been invited to participate in the beta test will need to create a temporary Blizzard Account by visiting here.
For more information on the Wrath of the Lich King beta test, please read the FAQ.