If you have any comments, questions, or suggestions about this book, please e-mail me at firstname.lastname@example.org.
This book was written using developer preview releases of both iOS 7 and Xcode. Several different versions were used, though the majority was done using DP (Developer Preview) 4. Large portions of the book were checked against DP 6, the last preview before the final release, but some earlier code does exist, especially in the CarValet sample. Check the errata for updates.
Now read through these pages, write the code, and do the challenges. By the end, you will know how to create iOS apps for handhelds and tablets.