From Bloody Disgusting:

"Remember when we told you that Lionsgate was planning on remaking the Twilight films? You can go ahead and just replace "Twilight" with "Saw"…

"Sources we trust tell Bloody exclusively that Lionsgate is tinkering with the idea of either making Saw VIII, or rebooting the Saw franchise altogether. It should also be noted that nothing is official, and nothing has been decided. Things are at infant stages at this time, but rest assured, Jigsaw will return.

...

"Even though Saw 3D was dubbed the “final” entry, we’ve been very firm (and public) in our stance that Lionsgate had more up their sleeve.

"Are you ready to play another game?"