Yes, I am ridiculously excited about this, especially the ability to create single-item NSArray's without a tonne of messy typing - this is probably the largest cleaning effect it will have.

Any idea how long it has historically taken apple to move the newer Clang releases?

I don't know, but I guess that the compiler itself has been seriously tested on Mac OS X, and WWDC is June 11-15. Esepcially if they want/dare to use this for compiling Mountain Lion, I expect there to be some kind of release around that time.

Yeah, I've been waiting for this release. Just in time for WWDC, too.

Sweet indeed. Certainly makes Obj C a little bit more concise.