Joseph Gordon Levitt has been confirmed as signing on for an unknown role in The Dark Knight Rises.
Sticking true to form, Christopher Nolan is reusing cast members from other films (loyal but come on!) Nolan has worked with Christian Bale, Michael Caine, Joseph Gordon Levitt, Tom Hardy and Marion Cotillard on non Batman films before.
POSSIBLE SPOILERS!
So far, speculation is that he will play Deadshot, a DC villain who started out life as a new crime fighter in Gotham and is then revealed to be a villain by Commisioner Gordon as he tries to become the new Dark Knight and king of Gotham's criminal underworld at the same time.
Deadshot is a marksman assassin with high technology weaponry and armour.
POSSIBLE SPOILERS END!