It's not a trailer, but here are some actual clips from 'The Suicide Squad'
Published
We didn't get a full-blown trailer for James Gunn's The Suicide Squad at DC FanDome. But we did get full and formal confirmation of who's playing which character in the massive cast. And we also got this, a behind-the-scenes featurette.
If a trailer is what you're most interested in seeing, this is the closest you're getting...