THQ announced that internal development studio Relic Entertainment is developing a second expansion pack to their RTS game Warhammer 40,000: Dawn of War. The add-on will include all-new explosive Dawn of War single-player action, new multiplayer content and two new playable races including the technologically devastating Tau, bringing the total number of playable races in Dawn of War to seven. This new add-on is expected to release in fall 2006.