I've just mentioned GNU/KFreeBSD to a friend, and while searching for something entirely different, I came across fresh guide for installation.
And this has apparently been released only a couple of hours back, which means that there's no way Google could have indexed it :)
For those who have missed most of it, the first announcement (I know of) is on libc-alpha mailing list. If you want to track development, visit glibc-bsd project page at Savannah.