LLVMメーリスの open positions in Apple's Swift compiler team というスレにて、Chris Lattner 曰く

> We literally have not even discussed this yet, because we have a ton of work to do to respond to the huge volume of feedback we're getting,
> and have to get a huge number of things (e.g. access control!) done before the 1.0 release this fall.
> You can imagine that many of us want it to be open source and part of llvm, but the discussion hasn't happened yet, and won't for some time.

だそうだ。