Expect a new Swift upgrade this spring

Swift 3.1, a limited-focus upgrade to Apple's general purpose systems language, is due next spring, with a few enhancements to the language itself as well as to the Swift Package Manager and Swift on Linux. Source compatibility with Swift 3.0 also is a key goal.
Apple detailed goals for the language in a recent bulletin, but the company already is looking past this upgrade to Swift 4, which is planned for late 2017, according to Apple's Ted Kremenek, release manager for Swift 3.1.[ InfoWorld's