THQ has dated Warhammer 40,000: Dawn of War II expansion Chaos Rising for 12th March 2010.
That's the same day the DOWII: Game of the Year Edition (contains all DLC and patches released so far) and Gold Edition (contains Chaos Rising plus GOTY extras) wil be released.
The add-on introduces the Chaos Marines and ups the level limit to 30. It's also standalone, so you won't need the original PC game in order to play.
Head over to our preview of Chaos Rising from December to find out more.