Man of Steel writer David S Goyer has suggested that Christian Bale will not play Batman in the proposed Justice League movie.
And Warner Bros has said that a collection of DC characters in a Justice League film depends on the success of Man of Steel at the box office.
Man of Steel has been produced by Dark Knight Rises director Christopher Nolan, leading to speculation that the franchises might be linked to his Batman film trilogy.
But Goyer has clarified that Bale's version of Batman does not in fact exist in the same continuity as Man of Steel.
Hey U Guys quotes Goyer as saying: "It would be disingenuous to say Warner Bros doesn't hope that this would be the starting point for a shared universe.
"And Zack has said that Bruce Wayne exists in this universe. It would be a different Bruce Wayne from Chris' [Nolan] Dark Knight trilogy, and it would be disingenuous to say that Zack and I haven't had various conversations on set, around 'what if' and 'moving forward'."
Goyer also clarified reports that he had agreed to pen a Justice League script, by insisting that he "definitely" has not formally agreed to any deals for the film.
"They're hoping that the [Man of Steel] film does well, but god forbid it doesn't, things will change. I don't know how many different iterations of Justice League they've tried to mount over the last decade or so.
"But for one reason or another they haven't happened. I think Warner Bros has seen - and Chris deserves the biggest credit for this - that we were able to revitalise Batman and put it into the first billion dollar superhero film. And they're hoping that Superman will be revistalised as well.
"And if we can do Batman and Superman, then maybe we can move on to Wonder Woman, and The Flash, and characters like that."