What updated are coming on Swift 6

Generated on 9/12/2024

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Swift 6 introduces several significant updates aimed at improving portability, performance, and the overall developer experience. Here are some of the key updates coming with Swift 6:

  1. Data Race Safety: Swift 6 introduces a new language mode that provides data race safety guarantees, helping developers write correct concurrent programs. This feature is opt-in, allowing developers to adopt it module by module and interoperate with dependencies that may not have migrated yet.

  2. Embedded Swift: A new language subset called Embedded Swift is introduced, which can run on highly constrained systems like operating system kernels and microcontrollers.

  3. Non-Copyable Types: Swift 6 introduces non-copyable types, which are a new feature to help manage memory and performance more effectively.

  4. Concurrency Improvements: There are enhancements to concurrency, including improvements to generics and the introduction of a new embedded Swift subset.

  5. Swift Testing Framework: An all-new testing framework named Swift Testing is introduced, which provides expressive APIs to simplify writing tests.

  6. GitHub Organization: Swift is moving to a new organization on GitHub, named swiftlang, which will host critical projects for the Swift ecosystem, including the Swift Compiler foundation.

For more detailed information, you can refer to the session What’s new in Swift (17:03) which covers language updates, including the new language mode and data-race safety.

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