Spider-Man 4? Know what it's about? Impressions?

Does anyone know what the 4th Spider-Man movie is going to be about? I was looking at the listing for the cast and I don't see MJ, where's MJ, it's just Gwen which has Emma Stone listed as playing her............I don't get it cause they reconciled in the 3rd film. Maybe they don't have the complete cast listing, but I would think that imdb.com would...........And didn't Emma Stone dye her hair red? Correct me if I'm wrong but isn't MJ the redhead and Gwen the blonde? Who else wishes Sam Raimi was still doing Spidey? I know the movies don't exactly follow the comics, but in the comics I think Gwen came before MJ, and the Vulture or something killed Gwen............and then he got together with MJ, but I clearly remember that in the comics that Spidey & MJ got married, so to have Spidey go from getting ready to propose, even though he screwed up big time, to having him in a relationship with Gwen, which it looks like they're doing with this next movie, it just doesn't make sense! I do think that at the very least Aunt May's character will be in Sally Fields very capable hands.........but I'm just not sure about the rest. What do you guys think?