MacOS Sierra: Apple launches new desktop OS with Siri built-in

Apple has made a landmark change to its 15-year-old desktop and laptop operating system. OS X has become macOS Sierra. The change was announced on stage in San Francisco's Bill Graham Civic Auditorium by Apple's Craig Federighi, ditching the naming scheme devised under the watch of founder Steve Jobs on his return to the company in 1997. The OS X nomenclature had reached OS X 10.11 with El Capitan, but Apple's next version will be simply named macOS Sierra, bringing it in line with the naming convention for its mobile and tablet operating system iOS. Apart from a name change, Apple has overhauled iTunes and Apple music, while macOS will finally gain full Siri integration, after Apple's voice assistant was first introduced on iOS with the iPhone 4S in October 2011.