"We haven't officially announced anything yet," wrote Dawn of War II producer Mark Noseworthy coyly in a forum thread. "The images are pretty interesting though. That is indeed a picture from our Map Editor."
Both the original Dawn of War and Relic's WW2 RTS Company of Heroes--built upon an earlier version of the Essence Engine DoW 2 uses--received editors soon after launch.
A huge Dawn of War II update titled "There is Only War" is currently the works, bringing eight new multiplayer maps and a large-scale rebalancing--as explained in a battle report. The update is due in the summer, with an open beta set to begin in early July.
This is exciting news. My problem with Dow2 has always been the lack of maps.