Update your World of Warcraft from version 4.0.6.13596 to 4.0.6.13623.
Blizzard introduces a new expansion to the World of Warcraft universe featuring new zones, two new races, and increased level cap. This patch updates your game to v4.0.6.13623. Blizzard introduces a new expansion to the World of Warcraft universe featuring new zones, two new races, and increased level cap.