I'm not familiar with how Ubuntu package and push their software. Do you get everything inc the kitchen sink with each crank of the wheel whether you want it or not? Red Hat, in between major/minor releases bundle up new RPMs into errata. An errata may contain one or more RPM packages that are tested/required to be installed together, and they're delineated into three types, prefixed with:
RHBA - Red Hat Bugfix Advisory
RHSA - Red Hat Security Advisory
RHEA - Red Hat Enhancement Advisory
In our production environment, we avoid anything that's an enhancement (too risky) and consider each bugfix and security errata to see if it's application to our builds, and whether we want to install them or not, and whether the fixes would warrant a new QA effort (time consuming and costly). We're not forced to, nor are we forced to take each point release in turn if we don't want either. That's the way it should be done.