Lapis Exilis we've been speculating on all facets of the film's plot without knowing very many details. This is kind of one of the points of this thread. Speculation is part of the anticipation process
I hear you - I was mostly just checking to find out if there were details known that I wasn't aware of. Since there aren't I'll stick to my speculation that whatever role Harvey Dent's memory plays in the new movie, it will be a relatively minor one, and certainly not the pivotal spark that sets Gotham aflame.