I'm pretty sure I remember there being no unix userspace available on iOS.
Not exposed to standard users, no.
There's no relationship between the existing projects and the Free/OpenBSD open source work.
That's simply not true. There's more to the BSDs than just the kernel – all of the userland stuff is incredibly important to Apple, especially as they try to further distance themselves from the GPL. There is a relatively strong relationship between the BSDs and OS X/iOS. It's true, the lower you get, the bigger the differences, but even xnu has some relatively current BSD sources. e.g. from OpenBSD:
Not exposed to standard users, no.
There's no relationship between the existing projects and the Free/OpenBSD open source work.
That's simply not true. There's more to the BSDs than just the kernel – all of the userland stuff is incredibly important to Apple, especially as they try to further distance themselves from the GPL. There is a relatively strong relationship between the BSDs and OS X/iOS. It's true, the lower you get, the bigger the differences, but even xnu has some relatively current BSD sources. e.g. from OpenBSD:
http://opensource.apple.com/source/xnu/xnu-2050.7.9/bsd/net/...