Java 21 (23.9 LTS)

Java 21 will be released in September 2023. This will be an LTS release, two years after Java 17.

Status: Early access.

Page last updated: 2023-04-26, EA 19

Schedule:

• 2023-06-08 Rampdown Phase One

• 2023-07-20 Rampdown Phase Two

• 2023-08-10 Initial Release Candidate

• 2023-08-24 Final Release Candidate

• 2023-09-19 General Availability

Resources:

• https://jdk.java.net/21/release-notes

• https://jdk.java.net/21/

• Schedule, status and features

Selected changes targeted to Java 21

• https://openjdk.org/jeps/431

• https://openjdk.org/jeps/442

• https://openjdk.org/jeps/444

• New system property to toggle XML Signature secure validation mode (JDK-8301260)

• System.exit and Runtime.exit() Logging (JDK-8301627)

Proposed to target Java 21

• https://openjdk.org/jeps/430

Summary of changes since Java 17 (previous LTS)

• https://openjdk.java.net/jeps/400

• https://openjdk.java.net/jeps/421

• https://openjdk.org/jeps/431

• https://openjdk.org/jeps/444