By moving macOS from version 10.15 (Catalina) to version 11 (Big Sur), Apple is making a symbolic change, but it is also taking the opportunity to simplify the nomenclature. Until then, the number of major versions had necessarily passed after the “10.” present since the launch of Mac OS X in 2001. We thus had Mac OS X 10.1 Puma then Mac OS X 10.2 Jaguar, Mac OS X 10.3 Panther, etc.
Starting with Mountain Lion, “Mac OS X” became “OS X” before being replaced by “macOS” when Sierra was released, but the numbering of the major versions has not changed continuing as follows: 10.8, 10.9, 10.10, 10.11… You know it, the numbers of the intermediate updates come after, which gives for example ” 10.15.7 For the latest iteration of Catalina.
With macOS 11, Apple is clearly introducing a new nomenclature for its desktop operating system. The beta release last night is numbered 11.1, which seems to indicate that Big Sur’s successor will be macOS 12. The change makes sense, this is how Apple is doing for iOS and its derivatives.
It also means that we will potentially have more noticeable minor updates. To use the example of macOS Catalina 10.15.7, Apple released a ” additional update »For this version, sort of a 10.15.7.1, except that the nomenclature does not go that far and therefore this version does not really have a name.
By placing the macOS Big Sur “11” in front of the first point, Apple is broadening the spectrum of numbering. Moreover, we have already seen it with macOS 11.0.1. Like iOS, we therefore expect intermediate Big Sur updates numbered 11.x and corrective updates numbered 11.xx