Apple has released Xcode 7.3 for developers, following a lengthy beta period, with several new features, enhancements and bug fixes. First and foremost, Xcode 7.3 includes the latest SDKs for iOS 9.3, watchOS 2.2, OS X 10.11.4. It also bundles the latest release of Swift version 2.2.
Xcode 7.3 include several new features, including more intelligent code completion so developers can more quickly write their programs. It also lets developers more easily handle developing for Apple Watch, with quick switching between paired Watches. The debugger now automatically evaluates framework code, a big pain point for developers to date. The static analyzer has been upgraded to detect more potential issues related to pointer nullability.