From Tim Cook himself: "Development for Apple Watch is right on schedule, and we expect to be shipping in April." As David Smith points out, if you want to be the first on the Apple Watch, the conservative estimate is to have your app ready by March 20th. Hey, that's only 46 days away. Happy Hacking!
Swift Around the Web
Spring - A library to simplify iOS animations in Swift.
PageMenu - A paging menu controller built from other view controllers (like Spotify)
RandomColorSwift - An attractive color generator for Swift. Ported from randomColor.js.
Bond - A Swift binding framework
SwiftSpinner - A beautiful activity indicator and modal alert written in Swift. Using blur effects, translucency, flat and bold design - all iOS 8 latest and greatest
KeychainAccess - Simple Swift wrapper for Keychain that works on iOS and OS X