According to Previews Magazine, Mattel's 6" Reign Of Superman are in fact being released on March 28. 2012.
In one of the best-selling comic books of all-time, The Death of Superman, Earth's most powerful hero, Superman, dies in battle when fighting the rampaging creature Doomsday. In the wake of Superman's death, four new heroes arise, each claiming the legacy of the Man of Steel. In honor of the 20th-anniversary of this storyline, Mattel releases five action figures based on the best-selling comic books. Collectors can choose from Superboy, Steel (with hammer), the Eradicator (with Kryptonian goggles), the Cyborg Superman, and Doomsday. Blister card packaging.