The first book is titled "Dreaming Of Elvis" (subtitle: Presley Legend in Japan) which was which was published on April 1st. in Japan. The author is Kazuaki Suzuki, an ardent Elvis fan who in this book describes men who would become like Elvis in the 50' and 60', and also the Japanese culture back then. Of course, it's written in Japanese and published only in Japan.
The second release is a Japanese translation of Bobbie Ann Mason's "Elvis Presley" (Penguin Lives Biographies) which was published in England in December 2002 and which will be published in Japan this April.