It's reckoned that Spider-Man 4 will involve two villains, which are considered to be Carnage and the Lizard. However, it is said that Director Sam Raimi is interested in featuring Morbius, since he is a fan of that particular villain. None of this has been confirmed though, so we don't exactly know WHO is to be featured in the next Spider-Man film. Due to the revamp of the movie series, whe won't know who so we'll find out in the theatres....