Toru Fujimoto let me know that his new book Serious Games: Transforming Education and Society Through Digital Games has just been published by Tokyo Denki University Press. If you don't know Toru already, he's the source for serious games related material in Japan. So it's not surprising that he wrote the book on it! Here's a (bad) Babelfish translation of the book webpage (my favorite mistranslationism is "Dull fool is dyeing").

The book is in Japanese and written for the Japanese market, but Toru also knows everything about what's going on in serious games in Japan.