GameTrailers has some new HD gameplay vids from Warhammer 40,000: Dawn of War: Dark Crusade, THQ's latest entry in their sci-fi strategy series. Due in Q4, the expansion features two new playable races -- the undead Necron and the technological Tau -- which brings the number of playable factions to seven. Developer Relic Entertainment (Homeworld, Impossible Creatures) is also including a new single player campaign. Fans of Rise of Legends might want to check this out.
See also: First looks at Warhammer: Mark of Chaos