For those wanting to test the KDE Plasma 6.6 Beta, you can find it in the following COPR:
Do note: This is only for experienced users only, and we do not recommend you install this on a production system!
This release will currently work with Fedora 43 and rawhide only. We are working on adding Qt 6.10 to Fedora 42, and then this release will make it to those users. We are also currently working on building that version into the fedora repos on Rawhide as we speak.