What's New in Swift October 2025

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)

The keynote's focus on 'goes brrr' code performance and the new Valkey client hint at where Swift's performance story is heading next.