As in previous years, Apple debuted another major version of its Mac operating system back during the June Worldwide Developer’s Conference, but with a slight twist this year — the company is retiring the traditional “OS X” name in favor of calling the new operating systems macOS, bringing the naming more logically in line with iOS, tvOS, and watchOS. While still continuing the same version numbering — it’s 10.12 under the hood — today’s public release of macOS Sierra (free) feels like the first pages of a new chapter in the evolution of the Mac operating system, bringing with it even more features to unify the experience with iPhone, iPad and even Apple Watch users.
