What's new in Swift and SwiftUI (WWDC 2026)

Vincent Pradeilles

WWDC 2026 brought significant updates to the Swift language and SwiftUI framework. This comprehensive overview covers:

Swift language:

New macros and expanded macro capabilities
Concurrency improvements and stricter Sendable enforcement
Enhancements to the type system

SwiftUI:

iOS 27-specific features (toolbars, sectioned queries, ResultsObserver)
Animation improvements
Performance optimizations

Tooling:

Xcode 27 updates (agentic coding assistance, Device Hub)
Better preview and debugging workflows

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What's new in Swift and SwiftUI (WWDC 2026)

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