From the announcement:
On June 19, prepare for war! The Heroes System Tactical Scale expands beyond the Norman bocages to the very stars into the universe of Warhammer 40,000 ® !
On the world-hive of Black Reach, an Ork Waaagh! breaks, jeopardizing this sector of the galaxy!
You will soon be able to help the Ultramarines in their merciless fight against the Warlord Zanzag and relive the grim adventures of Captain Cato Sicarius and Sergeant Scout Marines Torias Telion!