Chris Nolan has left a series of hints to the next villain through his movies and conversations. The first big hint was in a conversation between Chris and Leonardo Di Caprio. They had gotten into a conversation about Batman, in which Chris talked about how much he loved the Hush storyline. He also mentioned Hush was one of his favorite villains. That must mean something!
The next was in a reference in "The Dark Knight." Bruce was talking to Lucius Fox about his suit. Bruce asks how it does against dogs, Lucius replies that it should do fine against cats. There we go, Catwoman! These hints scream the next villain.
Here is a fan list of potential villains:
1.Riddler
2.Bane
3.Black Mask
4.Hush
5.Killer Croc
6.Catwoman
6.Firefly
7.Deadshot
So the question is, are they hints correct, or are they things not meant to be taken seriously?