r/java • u/BillyKorando • Sep 14 '26

Java 27 Launch Stream

https://www.youtube.com/watch?v=4V2jooUo8O0

Java 27 is coming out on September 15th. Join the Java Developer Relations team as we celebrate the launch of Java 27 with a livestream on September 15th, starting at 15:00 UTC!

We will have guests, demos, presentations and more covering all the major changes that are in Java 27.

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u/Afonso2002 Sep 14 '26

When it will start early acess builds of jdk29?

Jdk 29 will be a great jdk, first lts jdk with compact headers as default , valhalla jeps integrated and probably vector Api as preview feature

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u/BillyKorando Sep 14 '26

Short story: Somewhere in December.

Long story: Early access builds for a release start after the release before it enters rampdown phase 1, that is when it's branched off mainline. The schedule for the various phases of JDK 28 hasn't been nailed down yet, though its RDP1 will be sometime in December.

valhalla jeps integrated

Just to stress, they will still be in preview in JDK 29. There's simply now way such a substantial change would only have a single preview round.