Scala 3.8 released!

[NewsBot]

A new Scala blog post/announcement has been posted!

We’re pleased to announce the release of Scala 3.8 — a significant release that modernizes the Scala ecosystem and paves the way for Scala 3.9 LTS. This release introduces a standard library compiled by Scala 3 itself, stabilizes highly-anticipated features like Better Fors (SIP-62) and runtimeChecked (SIP-57), and introduces experimental features including flexible varargs and strict equality pattern matching.

A runtime regression was detected after publishing Scala 3.8.0 artifacts. Please use Scala 3.8.1 instead.

The issue could lead to JVM linkage errors at runtime. It may have affected Scala 3 users who execute Scala 2.13 libraries, as well as certain uses of specialized members in the Scala standard library. Any library published with Scala 3.8.0 is expected to remain binary compatible. Artifacts built with Scala 3.8.0 are safe to use and should stay binary compatible with subsequent Scala 3 releases.

A more detailed postmortem will follow shortly after the Scala 3.8 release announcement.

What’s new in Scala 3.8?

JDK 17 is now required

Important: This release requires JDK 17 or later for compilation and execution. If your project runs on an older JDK, you must upgrade before migrating to Scala 3.8.

The plans for this change were announced in early 2025 by the Scala team and are required to support future JDK 26+, which restricts access to sun.misc.Unsafe functionalities used by our exist...

Get the full details here: Scala 3.8 released! | The Scala Programming Language