Scala 2.12.5 is available

Scala 2.12.5 is now out! Highlights: the backend can now process classes in parallel (experimental), a Java 9 style -release flag, performance improvements.


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There is a regression in 2.12.5 when running on Java 9 and 10: . The 2.12.5 release notes were updated to mention the regression.

We’ll be releasing 2.12.6 soon to address it. In the meantime, stick with 2.12.4 if you want to use Java 9 or 10.

You can track progress on 2.12.6 at