Rumors have revived that Mac OS X will be renamed MacOS or macOS. At Apple’s website about “more answers to your questions about Apple and the environment," this sentence was spotted: “Years of use, which are based on first owners, are assumed to be four years for MacOS and tvOS devices and three years for iOS and watchOS devices.”
However, since the statement was spotted, Apple has revised it. Now it says that the years of use are are assumed to be four years for OS X and tvOS devices and three years for iOS and watchOS devices.” Yep, OS X, not MacOS (or macOS).
Not that these statements prove anything one way or another. However, code spotted in the latest release of El Capitan earlier this month launched the rumor that, following the naming conventions of iOS, watchOS and tvOS, Mac OS X would be dubbed simply macOS starting with the next major rev. We should find out at Apple’s 2016 Worldwide Developer Conference this summer.
And if OS X is renamed macOS, it will be interesting to see if the MacOS icon from the past returns.