Yes I know there has not been confirmation that this movie will even happen yet, but with snippets of news like this popping up I think it's certainly promising!
Harry over at AICN reported this. He said that while his sources are reliable, it should be treated as a rumor until confirmed.
"I have to say up front that the nature of this story is a rumor, not because I don't have solid sources, I do... but because it could simply NOT WORK OUT. That happens sometimes. It is something that the production teams are "considering" - but it is an extremely costly process, but one that I believe we would all love to see happen.
The THIRD chapter of Christopher Nolan's Caped Crusader's saga could very well be FULLY shot in IMAX, not IMAX Digital - but the beautiful, stunning IMAX that we saw pieces of THE DARK KNIGHT in.
Now this is something that I'm sure a lot of you will feel is a no-brainer. Nolan blew us away with the IMAX sequences in that film - but it was a very tough process to work in. It was mainly due to the limitations of how many IMAX rigs are available. Not only that, but lenses had to be created, adapted ,and god forbid one broke down. Part of the reason that Nolan went forward with INCEPTION first - besides taking a creative break from the cape and cowl adventures... was possibly to create a few new IMAX cameras made to his specs. Once again - the cost of shooting an entire feature film on IMAX... the stock, the time it takes to reset, to load, to move the cameras... Well... it is daunting, but as Nolan proved with DARK KNIGHT - the difference is stunning.
I'm going to continue to pursue this story further - to try to get some official comments.
Kinda strange hearing rumors of how a movie that has not even been officially green lit could be filmed! But there you go.