Development open for Swift 6.3.3 for Linux and Windows

Development Announcements
1

We are happy to announce the opening of the development phase for Swift 6.3.3.

  • Merge window open: Now
  • Merge window close: Jun 12th 2026
  • Planned release: End of June 2026
  • Release manager: @mishal_shah (shahmishal on GitHub)
  • Process documentation
  • Changes for Swift version 6.3.3 should be made on the release/6.3 branch
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2

Am I correct to assume that everything in the 6.3 branch of swift-foundation will be included?

e.g. [6.3.x] Add Date+HTTPFormatStyle.swift to CMakeLists.txt by jmschonfeld · Pull Request #1944 · swiftlang/swift-foundation · GitHub

3

Yes, that commit is already in the current 6.3.2 release: expand the list of tags at the top of that GitHub webpage to see which ones it got into.

1 Like
4

As a general rule, Swift's dot releases include all commits from previous releases (unless otherwise stated). If one is omitted and it wasn't intentionally reverted, that would be a bug in the release process.

So yes, that change should be in 6.3.3 if it was in 6.3.2.