Apple today announced Swift 2, the latest version of its programming language for iOS, OS X and watchOS with all-new Whole Module Optimization technology. Apple executive Craig Federighi also announced that Swift will be open source and made available for Linux later this year.
Swift 2 has new features that will enable developers to write even better code, including advanced error handling, availability checking and syntax enhancements.
Top Rated Comments
First off, Swift is open source now. That's not just a phrase, that comes with a set of rules meaning no, Apple can't prevent Google from using Swift if its open source.
Being open source means if Microsoft wants to adopt it in to Visual Studio they can, this isn't something Apple can do, they do not own Visual Studio and can't force Microsoft to adopt their stuff in the same way Microsoft can't up and develop .Net for Xcode.