Automatic Rolling OS Updates with Rollback and Testing

Since the idea of rolling distributions is to have an always up-to-date system, the concepts still requires you to manually update the system by typing in a command, mostly reading through forums or e.g. arch wiki before doing so. I'm aware of unattended update scripts, but does some sort of elaborate framework exist to keep a fleet of computers upgraded overnight, with a backup/ backup image/... of the before-the-update state which a user could easily boot back into if the system is instable in the morning.