Not only on the unity forum, on the Apple developer Forum are also many people (maybe the same?) who wants some clarification from Apple (I can't go into detail because I'm bound to the NDA, sry).

So the question is; Why should Apple do this?
I think that it has some legal reasons, cause when a third party framework developer fucks the whole system, Apple gets bad press and must wait for the third party dev to fix the thing. But if there is something wrong with an framework from Apple, they can just fix it in very short time with an OS update. (Thats my personal opinion and nothing from the dev Forum and/or the Beta SDK!)