Today’s news for developers was surprisingly compelling, thanks to a brand-new programming language, a move into the smart home, and new tools for letting apps interact with one another on iOS.
— The Verge.
Exactly. Everyone was expecting new versions of OS X and iOS, and we got them, but the iOS SDK and the new programming language are the real big thing. iOS apps can finally talk to each other, and they don’t have to be written in Objective-C anymore. Finally.