Recently, the character returned in the rebooted New 52 Superman titles, in the crossover event Doomed masterminded by Scott Lobdell.
Now, of course, much can change in the production process. This may be used purely for flashback purposes on the screen, looking at the life (and death) of Superman. It may be purely for promotional efforts to accompany the film. Or it may not make it to the final cut.
But as of now, it looks like Doomsday, the killer of Superman, be in the next film… will Superman make it out alive?
Probably. It is the dawn of justice after all. And not the wake.