EW talked to Twilight screenwriter Melissa Rosenberg about the production of Breaking Dawn, and she says  the film has NOT yet been green-lit.

“The most I’ve heard from Summit is ‘re-read it and start thinking about it,'” says Rosenberg, who is completing her show-running duties on the fourth season of the Showtime series Dexter. More telling, she hasn’t yet received one of the manifestos Meyer famously puts together before Rosenberg begins turning one of her books into a movie. Another source is also skeptical that Summit is far along in developing a fourth film. “As far as I know, Stephenie was still having meetings asking, ‘Can we really make this into a movie?'” The fourth book’s racy sex and explicit birth scenes make it less pre-teen friendly then the three earlier, more chaste romance novels. Summit, for its part, has no comment on the current status of Breaking Dawn.”