https://www.qt.io/blog/qt6-development-hosts-and-targets
https://www.phoronix.com/scan.php?page=news_item&px=Qt-6.0-Development-Hosts-Target
The host operating systems for Qt 6.0 they plan to utilize for continuous integration and testing are Windows 10 2004, macOS 10.15, Ubuntu 20.04, CentOS 8.1, SLES 15, and openSUSE 15.1. Those operating systems will see all of The Qt Company’s CI and verification focus.
The Qt Company is not planning to support Qt 6 on Windows 7 or Windows 8.x along with discontinuing UWP support on Windows 10.
Помянем.