Quite a few of us probably DO have an active NDA with Apple (e.g. from being a Registered Apple Developer). Though IANAL ,from my reading of the terms viewing the materials shouldn't constitute a breach of the NDA either.

That might need to be qualified: depending on jurisdiction, just because if you don't have a contract with Apple, you shouldn't necessarily assume you're safe from civil liability (if you use or pass it on to others, at least). Here in England, in some circumstances it's possible to be held liable in Breach of Confidence for passing on information you come across that you know is confidential, even without any kind of pre-existing relationship like a NDA.

(N.B. I have no idea whether that's true anywhere else but England. Also IANAL, this isn't legal advice, etc.)

You're aware that the content is illegal as they have confirmed it - otherwise you might have had doubt