As you already know, The Dark Knight Rises is going to be the final chapter in Nolan's Batman universe. It's going to be sad to see this series end, but it's going to happen. In a recent interview with the LA Times, Nolan talked about the finality of his highly anticipated film while explaining the difference between writing Batman for comics and film. He says that the biggest change between comics and film is that he's giving the series a sense of finality, and will give us a true ending to his Bruce Wayne story arc.
Without getting into specifics, the key thing that makes the third film a great possibility for us is that we want to finish our story. And in viewing it as the finishing of a story rather than infinitely blowing up the balloon and expanding the story ... unlike the comics, these things don't go on forever in film, and viewing it as a story with an end is useful.
Even the actors are still trying to get used to the fact that this will be the last Batman film with this group of talent. Morgan Freeman said,
The only drawback is this is the last one we get to work on with him. And a lot of us won’t really get that until later. It’s not until the curtain goes down that you think, ‘Jesus, that’s the last one.'
In the same article Christian Bale shares his experience reading the script for the film for the first time. His excitement gives us a feel for what's in store for us.
I remember when I first read the script, of course it was all top secret. I went round by Chris’ house, was shut in the room with the script — not allowed to leave with it — and it hit me that this was the last one. What Chris couldn’t believe was how slow I read because I go back and re-read until I have it all in my mind. I was in there six or seven hours. It was dark when I came out. And I was smiling.
I can't wait to see what Nolan has in store for us with this epic conclusion. I expect nothing less than mind blowing, and I don't think we'll be disappointed. I'm sure we'll be left wanting more of these films... and the sad thing is, they will never come.