Relic Entertainment, Games Workshop, and Sega's Warhammer 40,000: Dawn of War III got a new trailer today showing off their multiplayer mode in action. The game will have a beta later this month starting at 10am PST on April 21st.
The trailer that hit today is a nice little tutorial going through the game's multiplayer so you can hit the ground running in the beta. Shortly after that beta, the game is slated to release April 27th. The team at Relic added a few new environments to the third installment in the Dawn of War franchise alongside the more regular technical updates.
More details on the beta can be found here, and the multiplayer trailer is below.