This is a feature and maintenance release.

Tag: https://github.com/apache/commons-lang/releases/tag/rel%2Fcommons-lang-3.20.0
Diff: https://github.com/apache/commons-lang/compare/rel/commons-lang-3.19.0...rel/commons-lang-3.20.0
Release Notes: https://commons.apache.org/proper/commons-lang/changes.html#a3.20.0

In WildFly Core, commons lang is used by Elytron
In WildFly, commons lang is used in messaging and webservices subsystems