5.6.17. Urgency

This is a description of how important it is to upgrade to this version from previous ones. It consists of a single keyword taking one of the values low, medium, high, emergency, or critical 12 (not case-sensitive) followed by an optional commentary (separated by a space) which is usually in parentheses. For example:

Urgency: low (HIGH for users of diversions)

The value of this field is usually extracted from the debian/changelog file - see Debian changelog: debian/changelog.