What is the most current software for mac?
No context provided
What mac operating system software was released on September 25, 2017?
High Sierra version 10.13 10.13 macOS High Sierra
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What mac operating system software was released on September 20, 2016?
macOS Sierra 10.12 Sierra version 10.12
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What mac operating system software was released on September 30, 2015?
10.11 version 10.11 OS X El Capitan OS X 10.11 El Capitan El Capitan
Macintosh operating systems
https://en.wikipedia.org/wiki/Macintosh%20operating%20systems
The family of Macintosh operating systems developed by Apple Inc. includes the graphical user interface-based operating systems it has designed for use with its Macintosh series of personal computers since 1984, as well as the related system software it once created for compatible third-party systems.
Macintosh operating systems
The family of Macintosh operating systems developed by Apple Inc. includes the graphical user interface-based operating systems it has designed for use with its Macintosh series of personal computers since 1984, as well as the related system software it once created for compatible third-party systems. MacOS X 10.11 El Capitan edition was released on September 30, 2015, macOS Sierra version 10.12 was released on September 20, 2016, and macOS High Sierra version 10.13 was released on September 25, 2017.