I come back to inform you that Arashi Kessei 10-shunen Kinen Gentei Hozon Ban Arashi no 10-nen [Limited Release] is another unofficial book as previous one.
This is what CDJ representative mailed me :)
This might be a good news for us. We need to cover up out pocket after the 10 year album *lol*. However I still wanna get it ><
Cant wait for 10 nen no book official version :)