'dist-upgrade' vs Lite Update

[Valtam]

dist-upgrade is used in Install Updates. We don't use apt-upgrade because:

dist-upgrade in addition to performing the function of apt-upgrade,
    also intelligently handles changing dependencies with new versions
    of packages; apt-get has a "smart" conflict resolution system, and
    it will attempt to upgrade the most important packages at the
    expense of less important ones if necessary. So, dist-upgrade
    command may remove some packages. The /etc/apt/sources.list file
    contains a list of locations from which to retrieve desired package
    files. See also apt_preferences(5) for a mechanism for overriding
    the general settings for individual packages.

This will never change and is the way we will always do our Updates.