Or because it's a new feature release instead of just bugfixes. At least in e.g. Ubuntu, SRUs aren't accepted unless they're security or bug fixes, which makes

Or because it's a new feature release instead of just bugfixes. At least in e.g. Ubuntu, SRUs aren't accepted unless they're security or bug fixes, which makes it impossible to get newer features back to stable releases. Snaps provide a way out of this by removing the ability to break other applications with an update (since there are no dependencies).