While I was sleeping...https://fedoraproject.org/atomic-desktops/budgie/
Josh/BoB have prepared a Budgie for Fedora's Immutable (now called "Atomic"--does no one like the "I" word anymore) versions joining silverblue and kionite.
Quite a preview of what Solus Budgie may become (minus the Moss asfaik).
Am downloading it now. For some way unknown reason the iso is called "OnyxOSTree."
Blurb snippets:
"each version is updated for approximately 13 months, and each update takes effect on your next reboot, keeping your system consistent [this is normal Fedora from version to version I believe]
"A previous version of your system is always kept around, just in case.
"Atomic: The whole system is updated in one go, and an update will not apply if anything goes wrong, meaning you will always have a working computer.
"Containerized: Graphical applications are installed via Flatpak, and keep themselves separate from the base system."
No mention of Wayland anyway in the product blurb.
Overall: far out.