I think we can all agree that Cotillard Talia al Ghul and that Miranda Tate is just a cover for her true identity. I know Cotillard has said in recent interviews that she isn't Talia, but I don't think anyone is buying it. It's the perfect way to bring Bruce Wayne's character arc and Nolan's trilogy to a close by having her in it. She may not be evil, like Cotillard said, and may actually be a force of good. Talia could easily denounce the ways of her father, and his protege Bane, and try and help Bruce defeat him. She doesn't necessarily have to bad. I also agree with this article that I think the climax of the film will come during the day, something strange for a Batman movie I know, but it makes sense in the context of the story of THE DARK KNIGHT RISES and there's some photographic evidence that might support this theory based on the first trailer. THE GREAT DEBATE ON MIRANDA TATE