well originally they wanted christian bale to reprise the role but he declined, so they obviously wanted to avoid having to redo the parents death scene or building his background again and continuing from where he left off, thats why he is still an older batman in this one, so i doubt the joker will be in it nor the villains used already in nolans movie for that reason and because its too soon, too many comparisons could ruin the idea of the film after reviews