I've been commissioned to write a (BIG) book for the Japanese market about my conceptual approach to guitar, which will cover everything from improvisational guidelines, to timing, technique and much much more. I plan to make it as extensive and exhaustive as possible.
The book will probably be a few months in the making at least before being translated into Japanese, complete with audio examples.
This book will (for the time being at least) only be available in Japanese, and for the Japanese market only. So stay tuned for the upcoming release this fall, when I will post info and links for purchasing the book. The first, Japanese version of the book will only be available as a downloadable E-book, but an actual printed edition might be available in the future.