Immutable is promising and Kinoite great but just heads up that since it's Fedora based you still have their major-release-upgrade cycle to follow.

There are rolling immutable/atomic distros but Kinoute is not one.

FWIW, Kinoite will auto-update itself (the base image gets an update nearly every day).

While Fedora technically isn't a rolling release distro, it is very "bleeding edge" and it's major release cycle is quite frequent. With the Atomic (Immutable) flavors, major releases are an easy upgrade - just click the "Upgrade" button then reboot without fear of anything breaking.