It was just announced today that Christopher Nolan has signed on with Warner Bros. Pictures to produce a sci-fi action film he wrote, titled "Inception". He will produce alongside Emma Thomas, one of the producers for "The Dark Knight". "Inception" is being told as "a contemporary sci-fi actioner set within the architecture of the mind". Warner Bros. has stated that they are very excited to be working with Nolan.
A third Batman movie will have to wait, but "Inception" sounds awesome, and I think it's safe to say that this will be another hit from Christopher Nolan.