Whts new in swift
Asked on 06/14/2025
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At WWDC, Apple introduced several new features and improvements in Swift, particularly with the release of Swift 6 and Swift 6.2. Here are some highlights:
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Swift 6 Language Mode: This new mode provides data race safety guarantees, helping developers write correct concurrent programs. It allows for module-by-module adoption, making it easier to integrate into existing projects (What’s new in Swift).
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Non-Copyable Types: Swift 6 introduces non-copyable types, which suppress default copyability, making them suitable for scenarios requiring unique ownership, such as managing system resources (What’s new in Swift).
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Embedded Swift: A new language subset called Embedded Swift is introduced, which can run on highly constrained systems, expanding Swift's applicability (What’s new in Swift).
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Development Workflow Improvements: Swift 6.2 brings enhancements to writing, building, and debugging code, including verified Swift extensions for VS Code and background indexing for SwiftPM projects (What’s new in Swift).
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Performance Enhancements: Swift 6.2 introduces inline arrays and a new span type, which provide performance improvements by optimizing memory usage and offering a safer alternative to pointers (Platforms State of the Union).
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Concurrency Improvements: Swift continues to evolve its concurrency model, making it more approachable and capable for performance-critical code (What’s new in Swift).
These updates reflect Apple's ongoing commitment to making Swift a powerful, safe, and efficient programming language for developers across various platforms.
What’s new in Swift
Join us for an update on Swift. We’ll talk about workflow improvements that make you more productive, and new and modernized library APIs for fundamental programming tasks. We’ll show examples of Swift adoption throughout more layers of the software stack. Finally, we’ll explore new language features for both improving approachability of concurrency, and achieving peak performance when you need it.
What’s new in Swift
Join us for an update on Swift. We’ll briefly go through a history of Swift over the past decade, and show you how the community has grown through workgroups, expanded the package ecosystem, and increased platform support. We’ll introduce you to a new language mode that achieves data-race safety by default, and a language subset that lets you run Swift on highly constrained systems. We’ll also explore some language updates including noncopyable types, typed throws, and improved C++ interoperability.
What’s new in SwiftData
SwiftData makes it easy to add persistence to your app with its expressive, declarative API. Learn about refinements to SwiftData, including compound uniqueness constraints, faster queries with #Index, queries in Xcode previews, and rich predicate expressions. Join us to explore how you can use all of these features to express richer models and improve performance in your app. To discover how to build a custom data store or use the history API in SwiftData, watch “Create a custom data store with SwiftData” and “Track model changes with SwiftData history”.