Development open for Swift 6.3.1 for Linux and Windows

Development Announcements

mishal_shah (Mishal Shah) April 17, 2026, 2:31am 7

Swift 6.3.1 released!

Announcing Swift 6.3.1 Announcements

We are happy to announce the release of Swift 6.3.1. Install Swift Toolchain Install via Swiftly swiftly install 6.3.1 or swiftly install latest Download toolchain directly from Install Swift | Swift.org Docker images will be available on hub.docker.com/_/swift soon (PR#21263) Xcode 26.4.1 contains Swift 6.3.1 Release Notes Swift Fixed stack-allocation bugs in async functions that caused “freed pointer was not the last allocation” crashes, particularly in swift_asyncLet_finish. These lon…

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