Three page preview at Eurogamer by Ellie Gibson.
More information.Every player-controlled character in the game will be original - you can't "be" Batman or Superman, for example. "The reason for that is, we want them to feel real," Cao explains. "The best way to make Superman feel real isn't to have you play just another Superman in another Superman game, but to have your own character, and earn the right to fight alongside him." And to earn that right, you'll have to level up and prove yourself in the DC universe. "So come the day Superman asks for your help, you'll get a chill, because you know you're good enough; you're powerful and respected enough to have reached that echelon."
By way of a compromise you can pick a pre-built character who comes equipped with the same set of abilities as your favourite superhero, rather than trying to recreate them from scratch. "You could choose the Superman-type character who can pick up and throw cars, or the character who's filled out with Batman-type abilities - martial arts, acrobatics, gadgets. Then you customise your own appearance," says Cao.