Byteman 4.0.3 is now available from the Byteman downloads page and from the Maven Central repository. It is the latest release for use on JDK9+ runtimes. It is also recommended as the preferred release for use on JDK8- runtimes.
Byteman 4.0.3 updates the 4.0.2 release with a small number of bug fixes and performance improvements. More details can be found in the Release Notes.