The LA Times has this information about The Dark Knight Rises, and very specifically about Catwoman:
Gotham City is a war zone. A ruthless madman named Bane has ripped away any sense of security and the citizens, haggard and clutching suitcases with refugee anxiety, sit behind barbed wire waiting to see what will blow up next. A hooded prisoner is dragged in – it’s Bruce Wayne, one of Gotham’s most famous faces – but the eyes of the crowd go instead to the woman in black standing at the top of the staircase.
“Sorry to spoil things, boys, but Bane needs these guys himself,” says sultry Selina Kyle, played here by actress Anne Hathaway, navigating the steps with stiletto heels that, on closer inspection, turn out to have serrated edges capable of leaving nasty claw marks in a fight. She also wears high-tech goggles that, when not in use, flip up and resemble feline ears.
Let's talk about this: does it mean that Catwoman works for Bane? Or is she rescuing Bruce Wayne under the pretense of working for Bane? There's no way to really know, I guess.
What's interesting is that the stuff about Bane leaving Gotham in shambles feels an awful lot like the third act of The Dark Knight; we don't know enough about the story of this film to really make those comparisons, but the ground certainly seems familiar.
Hathaway was interviewed by the Times, and she had this to say:
“I love the costume,” Hathaway said. “I love the costume because everything has a purpose, nothing is in place for fantasy’s sake, and that’s the case with everything in Christopher Nolan’s Gotham City.”
That is Nolan summed up - a guy who is seemingly drawn to fantasy things, but has no interest in the fantasy elements. I think that worked well in Inception, a movie where the dream worlds felt very mundane and were probably true to the nightly, non-memorable dreams we have, but it continues to feel out of place in a series of films about a superhero who dresses up in a batsuit.