Swift 1.2!!!!!!!!!!!!!!!!! So many HUGE improvements, including compile time, unwrapping multiple optionals, sets, initializing constants when needed (with conditionals). But don't take my word for it - check out Swift 1.2 reactions around the web.
Swift Around the Web
- Mendel - Swift miliframework for implementing evolutionary/genetic algorithms
- TextFieldEffects - Custom UITextFields effects inspired by Codrops, built using Swift
- SwiftMoment - A time and calendar manipulation library for iOS 8+ written in Swift
- Tempo - Date and time manager for iOS/OSX written in Swift
- ShapeAnimation - Vector animation framework in Swift for iOS.