Initially marketing wasn't considering doing that (pushing it as an action film). I still think they made the right choice with trailer two. The last thing they should be doing is trying to push this film as if it's in the same realm with Avengers, it's not.
The second trailer shows there's deep consequences in this film, from the start. The heavy feel of both trailers combined are going to enhance the third trailer, it's a build up like everything else has been. The lack of news and everything else is coming to a explosive end.
Funny thing I heard, they are not planning to spoil the film, so this third trailer may still be somewhat of a teaser and their promotions from here on seem to be geared to not being too spoilerish. Interesting...I think. They're really trying to save this thing for July 20th. A risky move, they'll need to have most people unboard with this last trailer and there's like a ____load of stills they haven't let go yet that will basically have you on the floor pleading for the movie to come out in the next moments.
Funny they've held on to some of them for this long...I mean people would have been sold on Catwoman and Bane MONTHS ago if they released two specific pictures...but it is what it is, now we wait.
I think Matthew Modine may have one of the coolest characters in Batman in this film, from what I've heard.