Swift 5.3 released!

Swift 5.3 is now officially released! 🎉 Swift 5.3 continues to focus on language refinements, the developer experience, and expanding the Swift ecosystem to enable more opportunities to write Swift.

→ swift.org/blog/swift-5.3-released/

Swift 5.3 enhances developer productivity with language refinements, better diagnostics, faster code completion, and improved build times. While expanding platform support to Windows and additional Linux distributions.

It introduces features like multiple trailing closures, synthesised Comparable for enums, and property wrapper improvements through Swift Evolution proposals, alongside reduced binary sizes and lower runtime memory usage.

The Swift Package Manager adds support for resources, localisation, binary dependencies via XCFrameworks, and conditional target dependencies, enhancing cross-platform development.

Compiler improvements include a completed diagnostic architecture for precise error reporting, especially for SwiftUI and generics, and LLDB debugging is more robust with better trap messages and path remapping.