The Pragmatic Programmers pull their iPhone book:
We’ve had the iPhone book ready to go beta for some months, but were prevented from publishing it because of the iPhone SDK’s Non-Disclosure Agreement (which affects all publishers regarding this material, regardless of whether the reader is a member of the ADC or not).
Normally, pre-release NDA’s such as this one are lifted when the product finally ships. We expected that this NDA would be lifted when the iPhone 2.0 software shipped, but it wasn’t. The September announcement came and went, and still the NDA remains in place.
It now appears that Apple does not intend to lift the NDA any time soon. Regrettably, this means we are pulling our iPhone book out of production. But all is not lost: we are actively looking at alternative ways of getting this content to you. It probably won’t happen anytime soon, but know that we are doing what we can.
Apple is acting totally idiotically. The whole NDA business, the App store approach … As John Gruber points out:
Apple’s stewardship of the App Store, to date, can only be explained by malevolence or incompetence. Either way, they should change course.
What's especially sad is that if Apple just acted sanely – making the App Store the best instead of the only option to get apps onto your iPhone, similarly to iTunes/iPod, and lifting the stupid NDA restrictions – it's whole approach to iPhone development would be just perfect.