I believe i heard something about how the makers of Saw is trying to have a new Saw movie once a year for Halloween. It is a good idea, because people keep seeing them.
The Saw franchise is pumping out movies like rabbits......Saw 4 is coming at the end of this year, I see no end to the series.....I assume Saw 5 is coming out next year, along with 6,7,8,9 and 10.