Swift 5.3 Release Process

Swift 5.3 is a release meant to include significant quality and performance enhancements. In addition, this release will expand the number of platforms where Swift is available and supported, notably adding support for Windows and additional Linux distributions.

→ swift.org/blog/5.3-release-process/

Swift 5.3 focuses on significant quality and performance improvements while expanding platform support to include Windows and additional Linux distributions.

The release/5.3 branch will be cut on April 20, 2020, for most repositories, with some projects like swift-package-manager branching earlier on March 27, 2020, and changes after these dates require pull requests meeting strict criteria.

Language and API changes must go through the Swift Evolution process, ideally completed by the branch date, while bug fixes and diagnostic enhancements are evaluated based on risk and impact.