What's New in Swift October 2025
Article Summary
Joe Heck and Dave Lester just dropped the first edition of a new monthly Swift digest, and it's packed with signals that Swift is expanding way beyond iOS. Server-side Swift is heating up with performance gains and production-ready tooling.
This inaugural 'What's New in Swift' digest covers October 2025 highlights from the Swift ecosystem, featuring insights from the Server Side Swift conference in London, major package releases hitting 1.0, and active Swift Evolution proposals. The series aims to track Swift's evolution across all platforms, not just Apple devices.
Key Takeaways
- Swift OTel hit 1.0, bringing production observability to server-side Swift apps
- Swift SDK for Android preview released with dedicated forum category
- New Swift Build and Packaging Workgroup formed under ecosystem steering group
- Swift Collections 1.3 adds UniqueArray leveraging Span and non-copyable types
- Two Swift Evolution proposals accepted: @c attribute and @inline(always)
Swift is rapidly maturing as a cross-platform language with production-ready server tooling, Android support, and performance-focused language features landing in upcoming releases.
About This Article
Server-side Swift developers lacked standardized observability tooling. They needed better visibility into how their services performed within distributed systems, especially when it came to logs, metrics, and traces across their infrastructure.
Swift OTel 1.0 and async-http-client 1.29.0 gave server apps a way to export observability data using the OpenTelemetry standard. The Valkey client for Swift added full distributed tracing support on top of that.
Production server applications can now connect to system observability tools through standardized protocols. This makes it possible to monitor performance and optimize how services work together across multiple machines.