What's new in Swift?

At WWDC 2024, several exciting updates and new features were introduced for Swift. Here are the key highlights:

Swift's 10th Anniversary: This year marks a major milestone for Swift as it celebrates its 10th birthday. Since its announcement at WWDC 2014, Swift has evolved significantly, becoming a powerful and expressive language for app development and more.
Swift 6: The latest version, Swift 6, introduces several new features and improvements:
- Data Race Safety: Swift 6 introduces a new language mode that provides data race safety guarantees, helping developers write correct concurrent programs.
- Non-Copyable Types: New support for non-copyable types, which can help optimize performance and memory usage.
- Embedded Swift: A new language subset called Embedded Swift, designed to run on highly constrained systems like operating system kernels and microcontrollers.
- Concurrency Improvements: Enhancements to the concurrency model, including better data race checking and complete concurrency checking.
- Swift Testing: An all-new testing framework built from the ground up for Swift, named Swift Testing, which offers expressive APIs to simplify writing tests.
Swift's Ecosystem: The Swift project is moving to a new organization on GitHub (swiftlang) and will be managed by the Swift project. This includes the Swift Compiler foundation and many more Swift ecosystem packages.
Cross-Platform Development: Swift continues to expand its reach across different platforms, including improvements for cross-compilation to Linux and better interoperability with C and C++.
SwiftUI Enhancements: SwiftUI has gained new features such as custom containers, mesh gradients, and scrolling customizations, making it even more powerful for building user interfaces.

For more detailed information, you can refer to the session "What’s new in Swift" and the "Platforms State of the Union".