According to some scoopers, the third Batman 3 will likely focus on the redemption of the Caped Crusader, and Batman, as usual will have to save the city again from the villains. The gimmick was to select villains that can be adapted to the real world and should fit with the storyline of the first two Batman films.
Why is this so? Why not just recast Joker? Well, with Heath’s death and his very great portrayal of the Joker they think that it highly unlikely that the filmmakers would recast the role to bring the Joker back. It would also be a very hard challenge for the next character to top what Heath did. Heath’s acting as joker is indeed award-winning. And if someone would play as the Joker, that’s a must wait!