Nypost.com got some tidbits about the up-coming Spider-Man film from it's producer Todd Black, he revealed that Kirsten Dunst is definitely back on board and he denied the rumors circulating around the interweb that the villain for the film would be Morbius.
On the villain for the 4th film, Black had this to say:
"We're just coming up with who the villain's going to be now. We'll be shooting in New York again. Trust me, people will appreciate who we pick, because it'll be a big part of New York."