A recent Interview in About.com with Christian Bale on his new movie "Harsh Times" suggests that he already knows "the whole basic outline" for TDK. Here is a part of his interview where he talks about it and about Michael Caine being Batman:
Since you’ve had these opportunities, are you looking Forward to returning to Batman?
“I’m looking forward now. I’m getting kind of trickled down information from Chris [Nolan]. I’ve been seeing bits and pieces of it. I’m aware of the whole basic outline now. I am working on something else currently though. I’m back working tomorrow morning in New Mexico on something, so I’m kind of just focused on that completely now. But Chris will be contacting me when he knows it’s the right time and when he wants a bit of input.”
Michael Caine said he wanted to dress up as the decoy Batman in the next movie.
“You think that’s actually going to end up in the movie?”
No, but are you able to give input?
“Absolutely. Listen, Chris is totally open to ideas - no matter how insane. But open to ideas is a different thing from putting them in the movie.”
