Apple most certainly does NOT have leading support on the enterprise level. I know this from direct, personal experience. "That's how it's meant to work" and "We will probably fix that in the next release (date unknown)" are both considered perfectly acceptable answers by Apple Enterprise Support.
Oh...unless you're a 100% Apple shop and already have in-house Linux/Unix guru's who can do an end-run around the limitations in OSX.
Every other enterprise vendor has a roadmap and beta products/releases they share (at least under NDA) so related vendors can prepare their software/hardware. Apple releases the next OSX and major software vendors (PGP, Symantec, etc.) take months to release compatible software.
This isn't Apple bashing, just the state of things and it sucks. I actually like most of their hardware and OS implementation but some parts make want to pull my hair out...which is awkward since I have none.