iOS Ref

Swift versions

Last updated January 25, 2018.

Open source versions

Version Released Part of
Swift 4.1 2018 TBD Xcode 9.3 (beta)
Swift 4.0.3 2017 Dec 5 Xcode 9.2
Swift 4.0.2 Nov 1 Xcode 9.1
Swift 4.0 Sept 19 Xcode 9.0
Swift 3.1.1 Apr 21 Xcode 8.3.2
Swift 3.1 Mar 27 Xcode 8.3
Swift 3.0.2 2016 Dec 13 Xcode 8.2
Swift 3.0.1 Oct 28 Xcode 8.1
Swift 3.0 Sept 13 Xcode 8
Swift 2.2.1 May 3 Xcode 7.3.1
Swift 2.2 Mar 21 Xcode 7.3

Closed source versions

Version Released Part of
Swift 2.1 2015 Oct 21 Xcode 7.1
Swift 2.0 Sept 17 Xcode 7.0
Swift 1.2 Apr 8 Xcode 6.3
Swift 1.1 2014 Dec 2 Xcode 6.1.1
Swift 1.0 Sept 15 Xcode 6.0

Further reading