As usual, we need changes to kde-settings to adopt the new F34 backgrounds. f34-backgrounds is in Rawhide and Branched, and desktop-backgrounds is updated, so everything else is ready, and other desktops already have the new backgrounds.
This is an automatic blocker per "The default desktop background in a release-blocking desktop being the same as one of the last two stable releases" - https://fedoraproject.org/wiki/QA:SOP_blocker_bug_process#Automatic_blockers .
Should be fixed by kde-settings-34.0-1.f34 build,
setting ON_QA, then. We'll see in the next compose.
Looks good in Fedora-KDE-Live-x86_64-34-20210219.n.0.iso, closing!