I've just posted two bonus chapters for Creating iOS 5 Apps.
I originally wrote these as part of the book, but they simply wouldn't fit. Still, I think they have some very useful information.
Bonus Chapter A contains information on developing apps specifically for the iPad. Then it walks through converting the Health Beat application into a Universal app, letting it run on both the iPhone and the iPad.
Bonus Chapter B describes some of the other development tools, giving details on their use and some of the lesser known features. Specifically, it covers Xcode's built-in source control features, the debugger, unit tests and Instruments.
Take a look at the chapters and let me know what you think. They should give you a good idea of the writing style and content in the rest of the book.
The rest of the book should be coming out in December (makes a great stocking stuffer). The Amazon pre-order page says December 26th, but I thought it was coming out before then, around the 13th. I'll double check on that and post an update.