iOS 6 is here and Apple has packed it full with a lot of juicy updates. If you want to learn how to implement the new iOS 6 features in your app, I would recommend nothing other than the iOS 6 by tutorials Book by Ray Wenderlich and the book team.
Watch the video below to get a sneak peek into the book and the resources you get.
As you probably know, I am part of the tutorial team at raywenderlich.com and I can safely say there are no tutorial sites with better quality tuts on the web.
This is for serious developers only. Only buy the book if you are an intermediate to experienced developer.
A newbie will not get any value from the book.
If you buy the book through the links above, I will get a commission for the referral. If you prefer not to go through the link, no worries, you should get the book anyway, here is the direct link