Despite not making the cut for Microsoft's E3 briefing, today 343 Industries put out an E3 trailer for Halo Wars 2's upcoming DLC, Awakening the Nightmare. And because this is Xbox at E3, the trailer and DLC are available in 4K.
"Xbox One and Windows 10 exclusive. The Halo Wars 2: Awakening the Nightmare expansion brings a new perspective to the Halo Wars saga. Take control of the Banished and their advanced weaponry in a new campaign against a deadly enemy – the Flood – and expand your multiplayer arsenal with all-new leaders, units and maps. Coming Fall 2017 to Xbox One and Windows 10."
You can check it out below.