Недавно зарелизился XCode 6.1, включающий поддержку языка Swift для обеих платформ (iOS и OS X).
Xcode 6 has deep support for Swift throughout. It’s easy to create a brand new app using 100% Swift code, add new Swift code or frameworks to existing apps, and view documentation in either Swift, Objective-C, or both. All the popular affordances such as “Jump to Definition” or “Open Quickly” work equally well with Swift, and even Objective-C header definitions can be shown in Swift syntax.
