I think they start shooting just before PoA comes out. I read it somewhere, and it said something 'the actors won't be getting a long break' so yeah. And, I really don't care, well, I do care if they make GoF 2 1/2 hours long, as long as it's good and it's as close as possible to the book. They should include the stuff toward the end, the Triwizard Tournament (definitely this one) and other important stuff.