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Changelog
Scala 2 compiler and standard library. Scala 2 bugs at https://github.com/scala/bug; Scala 3 at https://github.com/scala/scala3
Last updated about 12 hours ago
The Scala team at Akka is pleased to announce Scala 2.12.21.
This release is compatible with JDK 25 LTS and also introduces preliminary support for JDK 26.
The following are highlights of this release:
Ordering subclasses (overriding min / max) may fail on Java 26, see comment on #11175@uncheckedOverride annotationThe new @uncheckedOverride annotation is equivalent to the override keyword, except that it allows to override nothing. This is useful when cross-building: a method may override or not, depending on the version of some dependency. #11175
This release is signed with a different GPG key than previous Scala 2.12 releases. The new key is the same one used by Scala 3. #11158
For the complete 2.12.21 change lists, see all merged PRs and all closed bugs.
As usual for our minor releases, Scala 2.12.21 is binary-compatible with the whole Scala 2.12 series.
A big thank you to everyone who's helped improve Scala by reporting bugs, improving our documentation, spreading kindness in discussions around Scala, and submitting and reviewing pull requests! You are all magnificent.
This release was brought to you by 9 contributors, according to git shortlog -sn --no-merges @ ^v2.12.20. Thank you Seth Tisue, Lukas Rytz, A. P. Marki, Friendseeker, Matthias Kurz, NthPortal, Philippus Baalman, Scala Steward, dependabot[bot].
Thanks to Akka for their continued sponsorship of the Scala 2 team’s efforts. Akka offers commercial support for Scala.
The release notes for Scala 2.12.0 have important information applicable to the whole 2.12 series.
Scala releases are available through a variety of channels, including (but not limited to):
using scala setting in your Scala-CLI projectscalaVersion setting in your sbt or Mill project