The direction is great, I think this shows that closed source programming languages are now definitely a thing of the past. However Apple has some catching up

The direction is great, I think this shows that closed source programming languages are now definitely a thing of the past. However Apple has some catching up to do. Microsoft has opened .net to Apple platforms and is actively working on open source tools and language implementation for OSX. Apple did not announce Swift for Windows, so Swift will miss out on that part of the market until someone else picks this up.