版本号 时间
Swift 1.0 2014-08-18
Swift 1.1 2014-10-16
Swift 1.2 2015-04-08
Swift 2.0 2015-09-16
Swift 2.1 2015-10-20
Swift 2.2 2016-03-21
Swift 3.0 2016-09-13
Swift 3.0.1 2016-10-27
Swift 3.1 2017-03-27
Swift 4.0 2017-09-19
Swift 4.0.3 2017-12-04
Swift 4.1 2018-03-29
Swift 4.2 2018-09-17
Swift 5.0 2019-03-25
Swift 5.1 2019-09-10
Swift 5.2 2020-03-24
整理自--> Swift官网