I hope I am posting this in the right place,
Nalan mentioned in an interview with Movie Talk, I think, that he planned to End Batman's story,
MOVIE TALK

Christopher Nolan Talks About Superman's New Beginning and Batman's End

by Matt McDaniel · March 10, 2009

http://movies.yahoo.com/feature/movi...-superman.html

As much as I would hate to admit it, having Bruce sacrifice himself to save Gotham would sort of bookend the story.  His parents died in the start of the story, and forced the city to save itself a little.  His death would save the city much more, if he was recognized as a heroic figure while doing it.  Of coarse Batman's death would be made public, Alfred would be sure to cover up everything, so that the symbol that Bruce created would never die.
On the other hand, maybe this movie will be the realistic ending to a man who tries to save a city single handedly, looses so much, and everything.  Maybe because of the events in the Joker movie Bruce becomes a darker, more withdrawn, more reckless and careless, vigilante.  Maybe Bruce spends more time as Batman, and less as Bruce, less time out of the bat cave, becomes more aggressive.
And this becomes a film about Alfred and his friends and family trying to save him.  And the story ends with Bruce reaching the light at the end of his dark tunnel.  Still Batman, but much more equipped to live the life of Batman or something. 

I was a little excited thinking that a superhero movie would finally come full circle with a beginning, middle, and end.  Finally having an ending to a comic character that hasn't had an end since he began in the 40s or 50s, and is going to be turning 700 or something soon.
It would be interesting, at least, to see how his story would end in a movie.
Not saying I want to see him die, or retire, or anything.  It just would be an interesting and new idea.

The series of batman should end, him saving the world by himself one last time.... and he will stand beside the grave of his dead parents....

Parents grave, that would be a good final shot.

I don't think even the movie Batman can give up the mission. I think he gets injured physically, psychologically or his identity is exposed.

I agree, I don't think so either.  I also don't see Bruce just giving it up, in Dark Knight however he mentioned it.  But would he actually sit back and watch without trying to help?
Whatever the ending is, I am sure Nolan will try to make it fall in with Begins and Dark Knight, to make it one large trilogy of a story, where the first and last movie bookend each other.
I can see the movie taking him even further into the darkness, having to deal with in a realistic way the events of Dark Knight with the Joker and Rachel and Dent.  I could see him become reckless and chaotic, more angry and aggressive.  Running with a bad crowd sort of thing.  And his friends and family, Alfred, Fox, and maybe Catwoman, have to bring him back.
And have it end with Bruce, still Batman but now he has more of a handle on this new life he has chosen for himself.  And maybe he has a love interest, Catwoman.   Its realistic to think that, Bruce started this "Batman" plan without really understanding what he was getting into.  Now he sort of does but he is still too shaken up over all he has been through since he became Batman.  At the end of the movie he could finally be stable in his life as Bruce and his life as Batman.
I could see that being the ending,
but with the news that Nolan wants to put the End stamp on this film its too tempting to not let my imagination run all over the place and think up endings where Bruce sacrafices his life to save Gothem from a super criminal, Alfred covers it all up so that no one knows that Batman is dead so that the legend of Batman lives on.  Because you can kill a man, but you can't kill a symbol.
I can see it connecting to the other two movies, You either die as a hero or you live long enough to become the villain, and Bruce's parent's murder forced the city to save itself and it has been limping along ever since.  Bruce was classified as dead in the beginning of the films too.  Its an idea, but would fans be in an uproar?  Even if the film is super good, Oscar worthy stuff?
What if the movie takes place a few years after Dark Knight, Bruce has been Batman for a while and has fought many criminals, and this could be the final chapter where Bruce retires. I just don't think its been enough time, he only just started as Batman.
What if Bruce passes the mantel onto a young replacement named Dick Grayson?  Like he talked about in Dark Knight, he was ready to step down as long as the city had a hero.

if batman does die i think itd be cool if at the end other vigilantes show up in cameos like nightwing and huntress batman having inspired them 

I think this is a little to soon (maybe one more film)  to end the story but Nolan being who he is and having the team behind him that there is I'm ok with that. I would like to see Bruce achieve his goal as opposed to the darker idea of his demise I think that would be an interesting way to end this series of films.

" It should end with Catwoman and Batman kissing.  "

I want it to end with Batman in his living room, remarking "Wow, I wonder what this had been like if I had randomly brought a teenager along with me, so he could make incredibly lame exclamations?"

Batman dying would be terrible. People would spoil the ending.
 
I think it should end with Batman coming to accept death & crime, and perhaps realizing he needs a real life beyond being a phony millionaire & an avenger of the night. He needs to listen to Alfred who also raised him, as that is what Bruce's father would have wanted. He should only ever be Batman if Ra's for example were to come back and plot to destroy the city. There are situations where Batman seems to be needed but he doesn't need to be out patrolling every night. That's just as much as an unhealthy obsession as was Joker's obsession with Batman for instance.

" He should only ever be Batman if Ra's for example were to come back and plot to destroy the city. There are situations where Batman seems to be needed but he doesn't need to be out patrolling every night. "

Catwoman by autoerotic asphyxiation in the Batcave.  

" Bruce in the back of the Limo with Alfred driving him. Some banter between them about how he needs to relax and take a night off after the trials of the latest adventure. Cut to exterior shot of limo heading into the parking lot of a huge circus. Giant billboard outside promoting the flying graysons. Fade to black... "

" With a plate full of "HOLYBATSHARKREPELLENTBATMAN!!!" worthy stunts and fights, coupled with some "NOFRIGGINWAY!!!" twists and turns and spiced up with some "MWAHAHAHAHAHAHAHAHA!!!!!" villany. And loaded with some awesomesauce. Lots and lots of awesomesauce. "

It should end with Darkseid invading earth and Batman ending the invasion with a well-timed precisely-aimed batkick!!!! Hehehehe! J/K... 
 
 @ArtisticNeedham said:

" As much as I would hate to admit it, having Bruce sacrifice himself to save Gotham would sort of bookend the story.  His parents died in the start of the story, and forced the city to save itself a little.  His death would save the city much more, if he was recognized as a heroic figure while doing it.  Of coarse Batman's death would be made public, Alfred would be sure to cover up everything, so that the symbol that Bruce created would never die. On the other hand, maybe this movie will be the realistic ending to a man who tries to save a city single handedly, looses so much, and everything.  Maybe because of the events in the Joker movie Bruce becomes a darker, more withdrawn, more reckless and careless, vigilante.  Maybe Bruce spends more time as Batman, and less as Bruce, less time out of the bat cave, becomes more aggressive.And this becomes a film about Alfred and his friends and family trying to save him.  And the story ends with Bruce reaching the light at the end of his dark tunnel.  Still Batman, but much more equipped to live the life of Batman or something.  "

Probably the way Begins did, with Bats flying off into the night.  Again.

Well if you look at the end of the 'The Dark Knight' I don't think they could do the whole Batman sacrificing himself to save the city since he took the rap for Harvey Dent's crimes as two-face.
 
I can't even imagine ending the whole Batman story, I would hope he just ends this particular trilogy, leaving it open for more movies but not sealing the deal on Batman totally.

They should end it with the Joker, Harley, Scarecrow, Hugo Strange, Riddler, Zsaaz, and Bane exacting their revenge on a captured and helpless Bruce Wayne - with Superman coming to his rescue.
But since that won't happen..... 
 
I'm not pleased with the way the Dark Knight went. Two-Face is one of my favorite Batman villains, and killing him off the way they did, let alone the way he was "created", is a big no no. If they had only kept the Long Halloween origin, it would have been spectacular. 
 
So here are the factors. Batman is now a wanted criminal with Gotham's police force actively hunting him this time. Bruce has now effectively alienated himself from all of his friends, sans Alfred. The mob is probably terrified of Batman now more than ever now that he's been said to have killed policemen and criminals alike (although we don't know if Maroni is alive to set the story straight, considering Harvey made it out just fine). 
 
For the citizens of Gotham, their focus is to try and stop Batman, with help from third parties. Since Nolan has effectively ruled out Superman or any other person outside of Gotham City getting involved in "Batman's Universe", these third parties will likely be private investigators, detectives with a lot of credit to their names, and/or -- the less physical villains from Batman's rogue gallery. Riddler and Hugo Strange come to mind.  If they are involved, they will use their resources to try (and succeed) and determine the identity of Batman. Considering how he really hasn't taken that many precautions, and an accountant working with Wayne Enterprises has already discovered his true identity without much effort, well, for these guys, it'll be a piece of cake. I imagine that there will be a negotiation between Riddler/and/or/Strange and Batman, with similar hopes of extortion. Perhaps one will consider selling the identity to the highest bidder - and as Goyer/Nolan have been inspired by Jeph Loeb in the past, they might decide to make this into Thomas Elliot, someone who wants Bruce all to himself. 
 
But then we have another problem, as this idea seems too much like The Dark Knight already, with Bruce trying to figure out if he should even bother trying to cover his tracks. As I mentioned earlier, Bruce doesn't have any friends at this point. What does he have to lose, apart from his crusade? His secret identity might not mean that much to him at this point, but on the flip-side of the coin, his secret identity might be the only thing going for him now that everyone hates Batman. It's really just a toss-up.
 
Nolan made a mess in the end of The Dark Knight. I'm not going to get my hopes up with expectations, it's his job to clean up, not mine.