We've known he'll be playable for quite some time now, but now we actually get to see him in action and what kind of role he'll play in the campaign, too! IGN posted his reveal trailer today and, bad Admiral Ackbar impression aside, it's quite epic.
I absolutely cannot wait for the game to come out on April 16th.
Here's a couple screen shots provided by Warner Bros.
Here's one of his alternate costumes.