Saw III, IV, and V director David Hackl is in pre-production for Saw VII, but right now Saw VIII is resting in the planning stage with no director. Tobin Bell, Jigsaw himself, says that he may take the director's chair if it is offered.
They asked me about that, I don't know quite how sincerely. I told them it was way too much work. Directors are there forever. Actors, they come in, they do their scene, but directors.... Then when they get a break, that's the time for everybody to descend on them and say, "Oh, I'm glad you're free for a moment because we've got a major problem in costume." I appreciate my down time. I'm being a little tongue in cheek about that. The truth is that I really do want to direct one of these sometime. I'm just waiting for them to come to me again. I have a better answer this time. Like yes.
If they don't approach Bell to direct Saw VIII, he may not get another chance, since producer Mark Burg says Saw VIII may be the last Saw sequel.