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Given that we are not even close to the official release of Java 9 and whether the proposal to JVM specification will be accepted and implemented for which version, it is largely inaccurate to title the article "Java 10 - Specification for Value Types" for a JVM change proposal. Besides, interchangeably referring to JVM and Java reflects the ignorance about the whole ecosystem of JVM languages.



Java 9 is scheduled for release in September[1]. How is that "not even close"?

[1] http://openjdk.java.net/projects/jdk9/


Well the specification explicitly talks about version 54 class files, which it then goes on to state "Version 54.1 class files are intended to be supported only by implementations of Java SE 10.". It's not going to land with Java SE 9.


With all the prolonged delays of features in Java, whether it is Java 10, 11, or 12 is still in question. As an instance, Jigsaw was proposed to be a driving feature of Java 7, and then delayed to Java 8 and even Java 9. And recently it was voted "No" by IBM, Red Hat etc.


Sure, features slip, but value types are coming in java 10 until they aren't.



As far as i've understood, i'm a lurker on the valhalla mailing list, the current plan is to release a MVP containing only the implementation of value types in the VM at the same time as the 9.1 release so by the end of Q1 2018.




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