Scala 3.9 LTS released!

Scala 3.9.0 opens a new Long Term Support line, succeeding Scala 3.3 LTS as the recommended baseline for library authors and conservative production users. The into implicit-conversion mechanism (SIP-71) is now stable, Scaladoc snippets can declare expected compile errors, Scala CLI adds JShell REPL support, JUnit 5 testing, sbt 2.x export, and experimental WebAssembly support, plus experimental Sloth tooling to rewrite legacy lazy-val bytecode away from the deprecated sun.misc.Unsafe API. Scala.js 1.22 ships with a stable WebAssembly backend. A deprecation warning is added for inaccessible companion implicits, which will stop being found entirely in Scala 3.10. Scala 3.3 LTS remains maintained for one year after this release, with roughly 56% of Scala 3 libraries still published against it. A detailed migration guide covers upgrading from 3.3 through each intermediate minor version.

Source: https://www.scala-lang.org/news/3.9. 8 Sync News only summarizes and links out; content copyright belongs to the authors and original sources.