User blog comment:Mobo85/Phineas and Ferb Movie Delayed to 2014, Spinoff on Back Burner/@comment-1518158-20121016001622/@comment-1518158-20121018004952

While some production details would probably stay secret, studios usually announce when filming commences on a movie (or at least, they do in the case of superheroes ones. :P) And I think that it'd be more for business reasons rather than personal reasons to be honest; I don't think any filmakers have had a tragic event occur in their childhood that caused them to keep production details for movies they'd work on in the future secret.