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Swift 6.4 Released
Swift 6.4 adds Swift Build as the default SPM build system, stabilizes Subprocess (1.0), expands C++/Java interop, boosts WebAssembly performance (up to 40×), introduces new language features (optional some/any, @diagnose, module selectors, async defer, cancellation shields), adds non‑copyable array types, SBOM generation, and broader IDE support.