"
Most Creative Cloud applications receiving updates in the next major release will still support Windows 7."
https://theblog.adobe.com/upcoming-changes-to-creative-cloud-os-support-for-windows-and-mac/
I seem to remember a discussion on this in the forum here but can't find the post now. Anyway it seems I read this wrong....
"latest operating system features and technologies, the next major release of Creative Cloud will not support Windows 8.1, Windows 10 v1511 and v1607, and Mac OS 10.11 (El Capitan). Most Creative Cloud applications receiving updates in the next major release will still support Windows 7. For more detailed information about operating system requirements for the next major release of Adobe video and audio tools, see this post."
As it says Windows 8.1 and older versions of 10 will NOT be supported, but Win 7 WILL be supported. Kind of weird though considering Windows 8.1's EOL is 2023, while Windows 7 EOL is 2020.
As for not supporting older versions of Windows 10, I can see that - 1607 EOL was this year, and 1511 ended last year. Can't speak on Mac OS, never used it.
Curious about "most" though.