To be honest, I do not think most people will see nougat until OnePlus roll out OxygenOS 4.0.2 in the next week as both 4.0, (which has now been withdrawn), and 4.0.1 have only been rolled out to a limited number of countries/users. If you do want Nougat you can download the OTA update by using a VPN and downloading from Germany or Canada. See...