Various retail outlets in Bahrain, Saudi Arabia, UAE, and Qatar have shown copies for sale today with most of them coming tomorrow. Of course this only includes the PS4 and Xbox One versions as the PC version is DRM locked to Steam (which won't run until release).
It's well known that RE 7 has a lot of secrets and surprises in stock. Players have been trying to figure out where (or when) does this latest entry take place in the timeline so naturally keeping the surprises a secret is a big part of the experience. Hopefully we'll be able to avoid any spoilers until release.