Just in time of the premiere of the new season of Crb Your Enthusiasm, one of its main characters will also release a book. J.B. Smoove is cashing in on the popularity of Leon Black by having him write a book. The Book of Leon will be published by Gallery Books reports The Hollywood Reporter via Associated Press. The publisher says the idea stemmed from a quote from Larry David that said Leon has so much to say and maybe he should put it all down in words. The Book Of Leon comes out on October 24.