Don't think it's a trailer. Just a 'talk'-image/background.
I hope it's another video series like Lords of War.
I get the feeling they wouldn't have posted that to twitter if it was a part of a private showing of a trailer.
Click the link. Someone asked him the question and he responded: "they were graphics from HS, Warlords & Reaper of Souls flashing on all the screens along with the DJ's music in the club."