THQ today announced the third expansion to Relic's blockbuster Warhammer 40,000: Dawn of War RTS franchise. Warhammer 40K: Dawn of War - Soulstorm is due in Spring 2008 and is again a standalone expansion and won't require any of the previous titles to play. Two further playable races are added bringing the total to nine, one of the new races is the 'malicious Dark Eldar' whilst the oteh remains a secret for now.

The new chapter will feature an entire intergalactic campaign, spanning not just a planet, but an entire star system - building on the revolutionary meta-game from Dark Crusade. Soulstorm will also introduce air units, additional units for the existing 7 races, and multiplayer achievements to boot.

RTS and Warhammer 40,000 fans are in for a treat then, as Relic, in association with Iron Lore Entertainment, continues its tradition of genre leading gameplay and strategic depth. We'll have plenty more on this soon, so stay tuned.

Air units in Dawn of War? Not sure how that will work but am interested enough to want to find out.