For testing and feedback. If all goes well, we will seriously consider
bringing plasma-5.9.x to official fedora updates (and will be an upgrade
path from using the plasma-5-unstable copr).
One blocker: a new kf5-kirigami2 dependency needs review,
https://bugzilla.redhat.com/show_bug.cgi?id=kf5-kirigami2
(If more issues come up, I'll create a formal plasma-5.9 tracker bug)
Enjoy, and let us know what breaks.