Laut https://mail.openjdk.java.net/pipermail/jdk-dev/2019-August/003250.html:
Per the JDK 13 schedule [1], we are now in the Release Candidate phase. The stabilization repository, jdk/jdk13, is open for P1 bug fixes per the JDK Release Process (JEP 3) [2]. All changes require approval via the Fix-Request Process [3]. If you’re responsible for any of the bugs on the RC candidate-bug list [4] then please see JEP 3 for guidance on how to handle them. We’ll tag the first Release Candidate build shortly. - Mark [1] https://openjdk.java.net/projects/jdk/13/#Schedule [2] https://openjdk.java.net/jeps/3 [3] https://openjdk.java.net/jeps/3#Fix-Request-Process [4] https://j.mp/jdk-rc
Weiteres unter http://www.tutego.de/java/jdk-13-java-13-openjdk13.html.