Warhammer 40,000: Space Marine Will Spread Chaos

I'm starting to have my doubts that Warhammer 40,000: Space Marine is going to be an action RPG as originally promised, but regardless of what genres the final result ends up being sandwiched into, the forces of Chaos will be making an appearance.  From my inbox:
THE FORCES OF CHAOS INVADE THQ'S WARHAMMER®40,000®: SPACE MARINE®

THQ Inc. (NASDAQ: THQI) today announced that the single-player campaign for its upcoming 3rd Person Action/Shooter, Warhammer® 40,000®: Space Marine®, will not only feature the brutal and feral Orks, but also the dark and sinister forces of Chaos.

Space Marine puts players into the role of one of humanity's elite soldiers, as they battle to protect an Imperial Forge World from a millions-strong Ork invasion. But this isn't all that faces Captain Titus of the Ultramarines. When Titus makes planet-fall, he soon realizes that the forces of Chaos are lurking in the shadows pulling the strings for their own nefarious purposes.

The addition of Chaos forces adds more variety to the Space Marine single-player campaign by complementing the animalistic and horde-like Orks with a much more powerful and strategic enemy. While Titus can dispatch dozens of Orks alone, the Chaos Space Marines are more than capable of going toe-to-toe with him, especially with the support of Renegade Militia, Tainted Psykers and Bloodletter Daemons, among other units.

Set in the rich Warhammer 40,000 universe created by Games Workshop®, Space Marine is scheduled to be released worldwide for the Xbox 360® video game and entertainment system from Microsoft, PlayStation®3 computer entertainment system and Windows PC in August 2011.

About Space Marine
You are a Space Marine, one of humanity's elite warriors, the last line of defence between mankind and its enemies. Through extensive genetic modification,  psycho-chemical conditioning and years of rigorous training that would kill a normal man a Space Marine becomes superhuman.

When one of the industrial '˜Forge World' planets where humanity creates its greatest weapons, comes under attack and the thousands of imperial soldiers stationed there are overwhelmed the only thing standing between this planet and its total destruction is your Space Marine. For more information, please visit www.spacemarine.com.