Scala 2.13.13 is here!

Announce
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The Scala team at Lightbend is proud to announce Scala 2.13.13.

This release adds binary integer literals, adds -Xsource:3-cross for crossbuilt projects, improves compatibility with JDK 21 and 22, supports Scala 3.4, and more.

For details, refer to the release notes on GitHub.

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We’ve added this to the “Known issues” section:

  • Some library authors who were already using -Xsource:3 are getting MiMa failures when upgrading to 2.13.13 and switching from -Xsource:3 to -Xsource:3-cross. If you’re in this situation, you may need to wait for 2.13.14; see scala/bug#12961
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A new section of the Scala 3 Migration Guide documents -Xsource:3 and -Xsource:3-cross: Scala 2 with -Xsource:3 | Scala 3 Migration Guide | Scala Documentation

This is also now linked from the 2.13.13 release notes.

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The new boolean-literals lint in 2.13.13 (see release notes) has been at least somewhat controversial; I suspect we will adjust it for 2.13.14. You can give feedback on how you think we should proceed here: Demote -Xlint:named-booleans to -Wnamed-literal and tweak noise level by som-snytt · Pull Request #10704 · scala/scala · GitHub