Thanks to Collider we have a few new images and some details about the opening sequence.
Opening sequence info:
When we first meet Lang, he is in prison for stealing from the CEO of a company that was itself stealing from its employees. “There’s a prison fight and you’ve got to buy Paul in that role,” says Reed. Lang longs to go straight—he has a young daughter he wants to build a relationship with—but when he leaves the big house, he ends up nabbing Pym’s Ant-Man suit. Was he set up? “There might be stuff going on that Scott doesn’t know about that’s a lot bigger than him,” Reed says.
Also check out this fan edited trailer we found on /Film.
Original Marvel trailer: