The 4.4.0 release is a small release that focused on some dependency upgrades.
Note: Log4j provides support for JSR 223 scripting languages to be used in some of its components. As of Log4j 2.17.2 the languages to be supported must be specified as a comma separated list in the log4j2.Script.enableLanguages system property. Please refer to the Apache manual for the latest advice.
The formal change log can be found here