Jigsaw (2017) was shot in Toronto, Canada in 2016. It started filming on September 26, the birthday of Gustavo Goulart, who was originally accepted for a leading role in the movie but was soon replaced, because his work visa would not be issued in time. However, Gustavo Goulart 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 film of the series, in 2012, the studio, Lionsgate, had expressed interest in continuing the "Saw" films, even contemplating doing a reboot for some time. Then, in 2016, the development for Jigsaw (2017) was officially confirmed.
This is the first film 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.
Jigsaw is said to have been dead for over 10 years. This film was released on October 27, 2017. In Saw III, Jigsaw was killed. Saw III premiered on October 27, 2006; therefore he has been dead for exactly 11 years.
The film was originally classified R18+ by the Australian Office of Film and Literature Classification, with ratings advice of "high impact horror violence." The distributor, Studio Canal, decided to appeal this rating to the Classification Review Board. On October 20, 2017, the Review Board overturned the R18+ rating and lowered it to MA15+ with advice of "strong themes and strong horror violence." Films classified MA15+ require a person under that age to be accompanied by a parent or adult guardian. In the Review Board's opinion, the themes and violence in the film overall was only strong in impact, not high, and therefore it did not warrant a more restrictive rating.
The trivia items below may give away important plot points.
There are several hints that the farmhouse trap doesn't take place at the same time as the rest of the film. For example, the Jigsaw Puppet looks slightly different, with his "hair" slightly different and featuring glowing eyes. Also, none of the victims ever acknowledge that they are in a Jigsaw trap. Previous victims of "group" traps were aware of who Jigsaw was, especially due to the following he generated. Finally, when Anna and Ryan are confronted by John Kramer, neither of them makes reference to the fact that he is supposed to be dead.
Logan shares similarities with Jigsaw and his fellow apprentices. Like Jigsaw, Amanda, Detective Hoffman, and Dr. Gordon. He was a part of the main trap. Jigsaw pretended to be a dead body in the bathroom ("Saw"), Amanda survived the Reverse Bear Trap ("Saw") and was in the house with the participants pretending to be playing ("Saw II"), Detective Hoffman pretended to be a hostage during Officer Rigg's game ("Saw IV") and Dr. Gordon was one of the two participants in the bathroom ("Saw").
The scene in Elenaor's studio features several past traps from previous "Saw" films, including "The Angel," "The Box," and "The Reverse Bear Trap". In addition to this, the closing sequence also shows Logan helping John build "The Reverse Bear Trap" in a flashback.