A new trailer has popped up courtesy of Comcast’s On Demand service. It’s all part of their you scratch our back we’ll scratch yours deal with Warner Brothers.

This new trailer is completely different in tone from anything we’ve seen before, and actually contains a lot of brand new footage from the film. In particular, we get more dialogue. Harvey Dent has a lot to say in this one, but there’s even a short scene where we hear Heath Ledger talking in something slightly more low key than the normal, manic Joker voice we’ve heard him using so far.

Here’s the trailer, take a look: