New Versionslog4j-2.1 (source) API Changes / Binary Compatibilitylog4j-2.1 (relative to 2.0.2): 645 new methods, 165 removed, 51 high severity changes, 3 medium and 17 low API Changes / Source Compatibilitylog4j-2.1 (relative to 2.0.2): 645 new methods, 165 removed, 56 high severity changes, 1 medium and 7 low |