Editing Software versioning (section)

===Apple===
During the era of the [[classic Mac OS]], minor version numbers rarely went beyond ".1". When they did, they usually jumped straight to ".5", suggesting the release was "more significant".{{efn|The complete sequence of classic Mac OS versions (not including patches) is: 1.0, 1.1, 2.0, 2.1, 3.0, 3.2 (skipping 3.1), 4.0, 4.1, 5.0, 5.1, 6.0, 7.0, 7.1, 7.5, 7.6, 8.0, 8.1, 8.5 (jumped), 8.6, 9.0, 9.1, 9.2.}} Thus, "8.5" was marketed as its own release, representing "Mac OS 8 and a half", and 8.6 effectively meant "8.5.1".

[[Mac OS X history|Mac OS X]] departed from this trend, in large part because "X" (the Roman numeral for 10) was in the name of the product. As a result, all versions of OS X began with the number 10. The first major release of OS X was given the version number 10.0, but the next major release was not 11.0. Instead, it was numbered 10.1, followed by 10.2, 10.3, and so on for each subsequent major release. Thus the 11th major version of OS X was labeled "10.10". Even though the "X" was dropped from the name as of [[MacOS Sierra|macOS 10.12]], this numbering scheme continued through macOS 10.15. Under the "X"-based versioning scheme, the third number (instead of the second) denoted a minor release, and additional updates below this level, as well as updates to a given major version of OS X coming after the release of a new major version, were titled Supplemental Updates.<ref>{{Cite news|url=https://www.macrumors.com/2018/02/19/apple-releases-macos-10-13-3-supplemental-update/|title=Apple Releases macOS 10.13.3 Supplemental Update With Telugu Crash Fix|access-date=March 26, 2018|language=en}}</ref>

The Roman numeral X was concurrently leveraged for marketing purposes across multiple product lines. Both [[QuickTime]] and [[Final Cut Pro]] jumped from version 7 directly to version 10, QuickTime X and Final Cut Pro X. Like Mac OS X itself, the products were not upgrades to previous versions, but brand-new programs. As with OS X, major releases for these programs incremented the second digit and minor releases were denoted using a third digit. The "X" was dropped from Final Cut's name with the release of macOS 11.0 (see below), and QuickTime's branding became moot when the framework was deprecated in favor of AVFoundation in 2011 (the program for playing QuickTime video was only named QuickTime Player from the start).

Apple's next macOS release, provisionally numbered 10.16,<ref name="Gallagher, AppleInsider 2020.06.22">{{cite news|last1=Gallagher|first1=William|date=June 22, 2020|title=Apple turns macOS up to 11 – or to 10.16|publisher=AppleInsider|url=https://appleinsider.com/articles/20/06/22/apple-turns-macos-up-to-11---or-to-1016}}</ref> was officially announced as [[macOS Big Sur|macOS 11]] at WWDC in June 2020, and released in November 2020.<ref>{{cite news|last1=Heater |first1=Brian|title=Apple unveils macOS 11.0 Big Sur|url=https://techcrunch.com/2020/06/22/apple-unveils-macos-10-16-big-sur/|website=TechCrunch|access-date=June 22, 2020|archive-url=https://web.archive.org/web/20200622183548/https://techcrunch.com/2020/06/22/apple-unveils-macos-10-16-big-sur/|archive-date=June 22, 2020|url-status=live}}</ref> The following macOS version, [[macOS Monterey]], was released in October 2021 and bumped its major version number to 12.<ref name="BGR, 2021.10.12">{{cite news|last1=De Looper|first1=Christian|date=Oct 12, 2021|title=Apple macOS Monterey: Everything we know so far|publisher=BGR|archive-url=https://web.archive.org/web/20211010180620/https://bgr.com/tech/apple-macos-monterey-news/|archive-date=October 10, 2021|url=https://bgr.com/tech/apple-macos-monterey-news/}}</ref>