As an iOS developer with several apps in the store and maintaining an enterprise app, I have no interest in Swift. The syntax seems like a step backwards; people complain about javascript constantly, and yet this is like a javascript mask on top of objective-c. Perhaps when it gains some popularity and people figure out what it's good for, and if it's sticking around, I'll learn it. For now I'll stick with objective-c, especially since it took like 3 years to become proficient with it.