Warner Brothers is in high gear searching for the next "leading lady" for Christopher Nolan's third Batman film. Nolan has already began meeting with actors for the roles in the upcoming movie with Tom Hardy already being announced having a major and undisclosed role.
The casting is for "late 20's-early 30's" females for The Dark Knight Rises but there is no word of what part the ladies are meeting for yet. There is a rumor that the role might be for Catwoman, now how cool would that be? Personally I'd lie to see Harley Quinn first and then Catwoman.
There should be an announcement within the next few weeks.