With the new Liquid Glass there is new application icon file:
https://developer.apple.com/documentation/Xcode/creating-your-app-icon-using-icon-composer
than the old school xcasset (https://doc.qt.io/qt-6/ios-platform-notes.html#icons).

It will be nice if Qt can handle the new .icon too. Either through plain CMake or perhaps some sort of GUI tool.