Splunk AppDynamics uses a calendar-based version format with a syntax of YY.M.X to reflect the date of release. For example, a release in October 2020 was 20.10.0, November was 20.11.0, and so on. If another version releases in the same month, the last number of the version increments by one, for example 20.11.1.
Controller and Agent Releases
The versioning of Splunk AppDynamics language agents is done independently of each other and the Controller. See Agent and Controller Compatibility.