The post is about IBM's Swift implementation.

Swift, the language, is from Apple. IBM simply has built a bunch of tools for Swift and would like to sell consulting services around them.

Yes, but I thought the question you replied to was about IBM's implementation, and thus their github page for it.

What? They don't have their own implementation...

I've heard they ported GCD to Linux, though. Would love for that to be open-source.

It already is, and IBM did do a lot of the work in porting it: