Don't know why you're getting down voted, sure Swift has some neat features, but if any other company released something like this that was closed source, no one would really care.
Just an example:
>Microsoft released C# Roslyn source code, announce Linux support with K Runtime this year
They're going to the right direction, maybe someday...
>Apple released Swift, closed source language that runs only on one platform (Mac)
Apple is so awesome, keep innovating guys! Now let's write a webstack and nosql db using Swift!
Even more when K will come out I don't think there will be any worries at all.
http://nuget.codeplex.com/SourceControl/network/forks/threed...
Let's just hope that with the release of VS2014 and K Runtime all those things will get solved like MS promised.
what matters is the platform
no one cared if Javascript the language was open source when it was the only way to do client side scripting for web pages.
similarly Swift has iOS and OSX - other languages are available on these but I guess developers are anticipating Apple emphasising Swift over Objective-C going forward