Dean is also seen with a bloody lip, and Jack is shown in another image holding a bloody angel blade.
The bloody angel blade (and the shocked look on Dean’s face) suggest that Jack ends up killing one of the angels – or perhaps, that someone attempts to kill him with an angel blade, and fails.
Sam and Dean appear to be trying to stop Jack from doing any harm, or any more harm.
The trailer did give fans a quick look at Jack, but now, new images from the season give fans a much better look at the golden-eyed threat.