IMO, this is a legal gray zone. While there is a confidentially agreement with the existing Apple TV beta, iFixIt is a journalism site.
There are many court cases where journalists have been off the hook from any liability on breaking confidentially on grounds of First Amendment. In fact, Apple's actions could be viewed as an vengeful act. It was Apple's mistake to send an Apple TV beta to a developer that's a known journalist. Was the Apple TV beta developer list generated from the lottery reviewed by personnel or was it just sent off to a distribution center?
If any attorney starting their career is interested in making a name for themselves, taking on Apple on this issue pro-bono or share of settlement could be a good one.
What bull. NDA's are clear and airtight. Any dumb lawyer wanting to lose would take your advice. Everyone should remember the old saying, don't bite the hand that feeds you. Why do people think they're entitled to breach confidences and non disclosure agreements? Oh, that's right. This generation are entitled to whatever they want. Silly me.