A teaser trailer for Saw IV has surfaced over on Yahoo! along with a series of new posters which seem to indicate that Tobin Bell's Jigsaw does indeed make some sort of an appearance in the new film.
The teaser doesn't show a whole lot, more of a gear-up tease for the fans. Still, for those who love torture porn, I'm sure it will get the blood flowing.
Our own Tom Leupp took in a cocktail mixer with the Saw IV crew a few months back, which you can check out right here.