This from MTV...
While Bale maintained no less than three times during the interview that he was unsure another "Batman" will be made, the 35-year-old actor is contractually obligated to return — however, Nolan is not. And Bale simply can't conceive of having to reprise his role without the director by his side.
"I don't even want to think about it," he said.
What might keep Nolan from returning? "It would be purely that he would need to find a story that was good enough — and if he can't find that, then it wouldn't happen," Bale explained.
Without a script or a director, Bale was reluctant to speculate about what a future "Batman" would look like. "I'm even a step away from having to consider that," he said.