Spider-Man 4 screenplay to be completed soon?

Sam Raimi told SCI FI Wire that the script for Spider-Man 4 should be completed by summer.
"Right now, David Lindsay-Abaire is working on a draft of the new picture," Raimi said in the interview. "And he's hard at work, and hopefully we'll see something in about three months."
Raimi declined to discuss possible villains for the fourth installment.Tobey Maguire has signed on to reprise his role,but Kirsten Dunst hasn't,alhough the director wants her to return.
Spiderman 4 is scheduled to be released on May 6, 2011.