A few weeks ago, it was announced that the cast of the untitled theatrical film would consist of all celebrities, including Will Forte as Shaggy, Gina Rodriguez as Velma, and Tracy Morgan as Captain Caveman. Today, the remainder of the cast has been released thanks to ComicBook.com. Amanda Seyfried will voice Daphne, and Disney's High School Musical star Zac Efron will voice Fred.
The film is oddly titled S.C.O.O.B. once again according to this article, even though that title seemed to have been discarded based on some other news we received. I'm not sure if this is official yet, or if whoever wrote the article just didn't get the news of a title change. Stay tuned for more updates!