Collider.com has a new interview out with David Heyman where he discusses a bunch of fun topics!  Here are some highlights from the long interview:

The ending of part 2 is one of the last things they’re going to shoot. David also says he expects the ending battle to be around 30 minutes in the movie. He says the gang gets to Hogwarts early on and then they’re a lot of build up to the battle.

Well, I’d say that Part 1 is a road movie. You know Harry, Ron and Hermione are on the run. It’s quite naturalistic in the way it’s been shot. And I think the 2nd half is more operatic with the huge, great battle for Hogwarts. It’s very emotional.

We haven’t done that but we have talked about the ultimate collector edition and things like that, which we’re already working on. I’m sure the DVD’s will find themselves repackage every which way over the coming years. But we are developing the ultimate collector’s edition and I’m sure…and there’s additional material that’s going on each of those, but there’s been no discussion about repackaging the films with cut scenes or in different ways, not yet.