It's finally got a title now - albeit a lazy one.
Warner Bros has confirmed on the film's official Twitter feed that the sequel to Man of Steel will be Batman v Superman: Dawn of Justice.
The title firms up the franchise's plans to expand into a Justice League movie threequel encompassing more DC Comics superheroes, once Batman v Superman has finished making a killing at the box office.
It uses a 'v' rather than the 'vs' it has been going under thus far, probably just for aesthetic reasons, though the one letter change has still managed to annoy some fans.
A logo for the movie was released too, showing Superman and Batman's iconic emblems combined.