The point is that you don't have to: the unattended-upgrades part is separate from the major upgrades. You still get security updates for the previous stable re

The point is that you don't have to: the unattended-upgrades part is separate from the major upgrades. You still get security updates for the previous stable release for a while after a new stable release, and the security updates can safely be installed the minute they're announced without bringing in unwanted features changes.