The American Girl Ultimate Visual Guide is available for pre-order from Amazon with a release date of September. There is very little information available about this book right now but I'm sure that will change soon.
http://www.amazon.com/American-Girl-Ultimate-Visual-Guide/dp/1465444963/ref=sr_1_142?s=books&ie=UTF8&qid=1463284012&sr=1-142&keywords=American%20girl&tag=viglink20340-20
