Scala News – October 31st, 2026 Edition

A curated list of Scala related news from the community.

Scala Days was held in Berlin on October 12 and 13. Recordings of the talks are now available on YouTube.

Scala Summit 2026 was held in San Francisco on October 19. Recordings of the talks are now available.

Notes exploring Scala 3's experimental capture checking feature, which tracks capabilities (like open files or connections) that a value's type has closed over.

Salar Rahmanian describes improving Scala News' RSS filtering, moving from simplistic keyword matching to using Verdict4s with TypeSafe AI's Jev decision model to classify article relevance.

Introduces Apache DataSketches in Scala for memory-efficient streaming analytics: distinct counts, frequent items, quantiles, merging windows, and Base64/binary storage, with version/JDK

Introduces Eezo, a Scala 3 web framework shown at Scala Days, generating CRUD routes and auth from case classes, plus live components syncing all open tabs.

Scala Center details sbt 2.x ecosystem migration efforts: centralizing plugins, sbt2-compat layer, ABI lock-in, now 172 plugins on Scaladex, plus Scala.js 1.22.0 sbt 2 support.

Scala 3.10.0 released, starting the Scala Next series. Stabilizes SIP-67, previews three SIPs, removes deprecated legacy syntax, drops Scala 2 cross-compilation, adds .deb/.rpm packages.

Scala 3.9.0 launches as the new LTS line, succeeding 3.3 LTS. Covers LTS/Next model, 3.3's backport history (43% of changes), 56% library adoption, and 3.9's new features.

Roundup of Scala Days 2026 talk videos touching Typelevel: org overview, GitHub SOS security fund, Cats Effect Ref caching, LLM code quality, Summer of Code projects, trait specialization, and

VirtusLab now maintains Scala 2 alongside Scala 3, absorbing former Akka team members. Lukas Rytz stays on Core Team as Scala 2 rep. Next 2.12.22/2.13.19 releases are being planned.