Based on the award-winning mini-series, the animated feature is set to hit DVD and Blu-Ray early next year.
Written by Grant Morrison and drawn by Frank Quitely, the story begins with the Man of Steel oversaturated by radiation during a rescue mission near the sun, accelerating the degeneration of his cells. Knowing that he has a limited time before he dies, Superman sets out on a journey that sees him revealing his secret to Lois Lane, giving Lex Luthor an epiphany on humanity and ensuring the safety of Earth for when he is gone.
Warner Brothers Animation has announced that the role of Superman will be voiced by James Denton with Christina Hendricks as Lois and Anthony LaPaglia as Lex.
Also in the cast are Ed Asner as Perry White and Frances Conroy as Ma Kent along with Linda Cardellini, Arnold Vosloo and Matthew Gray Gubler.