With the latest additions to iOS 6 including tops such as Apple’s Passbook implementation, so this book devotes a chapter or two on Pass Kit, the API to allow you to implement a loyalty card system on your app (or even exclusive of an app). New runtime features have also been included in this revision, as well as examining Auto-Layout, a new way to layout your UI elements within a XiB file (or programmatically). iCloud has also been given some love as it matures through iOS, by the author, which is good.
Overall, I don’t have any complaints, the changes are incremental and if you own the previous edition, it may be questionable whether it is worth the upgrade, but otherwise, a fantastic book with solid examples and features.
Concise:
Level:
Prior Knowledge: Basic OOP experiencce
My rating :

Author: Vandad Nahavandipoor
Title: iOS 6 Programming Cookbook, 3rd Edition
Publisher: O’Reilly Media
Year: November 2012