As I said in the original thread regarding this movie, I doubt that Two-Face is dead. First, he is one of two titular Batman villains, the other being the Joker. Second, it was a three story fall and the most he would have suffered from the way he landed was some broken bones, I don't recall him having any other injuries other than the burns.

I am torn between whether or not I want them to bring Two-Face back though. I did not like the way they portrayed the character in that he was a thing of vengeance, rather than a criminal super villain with multiple personality disorder. I like Aaron Eckhart as an actor and I enjoyed his portrayal of Harvey Dent. However, I did not like how he portrayed Two-Face as an intensely human being bent on destroying the lives of the people connected to the murderers of the person he loved the most. It felt too cheesy to me. So, I would not be disappointed in seeing the character again, portrayed once again by Eckhart, but I would like to see some changes to the way he is played. For the most part, I attributed the acting to how little screen time Two-Face received.

As far as the next movie is concerned, I think it will focus more on Bruce Wayne and Batman trying to deal with no longer being Gotham's main squeeze. It will be him trying to prove to himself and the world who he is. If Two-Face were to return in the eventual sequel, I wouldn't be surprised if they included some of the minor villains like they did with Spider-Man 3 (only a lot better because that movie sucked).