Breaking Dawn to be a Two Parter?

As reported by MTV
Melissa Rosenberg has got to be the happiest lady in the Twi-verse. She has just signed on, according to E! Online, to pen the screenplay of the final “Twilight” novel, “Breaking Dawn” — which, by the way, we still don’t know if it’s going to be in one or two movies.
According to E!, when they spoke to Melissa last week, she said “everything was still up in the air,” but their “Twilight” insider said Melissa's deal is done, though Summit has returned to the idea of splitting “Breaking Dawn” into two movies.
 She goes into say why she does not like it being split into two movies but I wont post because it contains tons spoilers. But if you wish to read the full article go ahead and click on the MTV link. I really dont mind to much if it was split but I do mind if it is rated pg-13! I want the deets on their honeymoon that we did not get with Stephanie Meyer! lol
Picture if from Twfans but I could not locate the exact page; Courtesy of MTV