linked earlier, saying there will be a 4th Spiderman film

That article says a certain somebody will die in Spiderman 3 and will come back in Spiderman 4.

We know that (SPOILER)Gwen Stacey is casted to be in Spiderman 3, and we know that Gwen Stacey is the one who died after Spiderman saved her in an early Spiderman comic. I figure that (SPOILER)Gwen Stacey will return in Spiderman 4, but I don't know in what capacity, since I don't read the comics.