Found in 1 comment on Hacker News
TomOfTTB · 2009-01-30 · Original thread
Once Apple lifted the Developer NDA (http://blogs.zdnet.com/BTL/?p=10269) it became ok to publish books on the topic. I actually don't know why this is being posted as news being that Manning published a similar book a month ago (http://www.amazon.com/iPhone-Action-Introduction-Web-Develop...)

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