In a post on Reddit, a user calling themselves FarCry5-throwaway made a post in which he/she gave away some details about the upcoming title. Apparently this user was involved in a focus group back in 2016 in which the client of the group turned out to be Ubisoft and that the game they were testing was Far Cry 5.
According to part of the post, it reads, “The general thrust of this game is that it will take place in present day, and feature the protagonist taking on a Jim Jones or David Koresh-like religious cult in a small town in Montana that’s been populated by, essentially, Doomsday-preppers bent on furthering their cause. So, modern-day weaponry and modern-day vehicles, plus a hilly, mountainous backdrop.”
Now as the OP notes, this focus group testing took place a year ago. This means that from then until now, a lot of things could have changed where Ubisoft could have ultimately scrapped the plan and gone for something else entirely. Of course there is also the question of whether or not the information was accurate in the first place, so do take it with a grain of salt for now, but hopefully we’ll have more details to share soon.