OpenJDK 21 is the latest Long-Term Support (LTS) release of the Java platform. * https://fedoraproject.org/wiki/Changes/Java21 For a list of major changes from OpenJDK 17 (java-17-openjdk), see the upstream release page for OpenJDK 17 and the preceding interim releases: * 18: https://openjdk.java.net/projects/jdk/18 * 19: https://openjdk.java.net/projects/jdk/19 * 20: https://openjdk.java.net/projects/jdk/20 * 21: https://openjdk.java.net/projects/jdk/21