Discussion on this issue began at least 10 months ago, according to the "Concurrency" proposal in the repository: https://github.com/apple/swift/blob/master/do

Discussion on this issue began at least 10 months ago, according to the "Concurrency" proposal in the repository: https://github.com/apple/swift/blob/master/docs/proposals/Concurrency.rst https://github.com/apple/swift/blob/master/docs/proposals/Co... The news here is really an update that they're still thinking about it and it won't be in Swift 4.