Jigsaw (2017) was shot in Toronto (Canada), in 2016. It started filming in September 26, birthday of Gustavo Goulart, who was originally accepted for a leading role in the movie, but was soon replaced because his work visa wouldn't be issued in time. However, Gustavo Goulart has released his audition on YouTube as a Short Movie called Walking After You (2016).
Even though Saw 3D: The Final Chapter (2010) was originally intended to be the final movie of the franchise, in 2012 the studio Lionsgate had expressed interest in continuing the "Saw" movies, even contemplating rebooting the franchise for some time. Then, in 2016, the development for Jigsaw (2017) was officially confirmed.
This is the first movie in the whole franchise to be filmed in anamorphic, especially in the 2.35:1 aspect ratio. The previous titles, including Saw 3D: The Final Chapter (2010), were all filmed in spherical/non-anamorphic.
The trivia items below may give away important plot points.
This is the first Saw movie that doesn't include everyone in the cast list to fully surprise the audience with previous characters such as Detective Hoffman (Costas Mandylor) and Officer Rigg (Lyriq Bent).