Leica have published the 8th edition of their Pocket Book, an insightful look at the Leica Cameras and Lenses introduced since the previous 7th Edition. In addition to introducing the new S2 Medium Format System, the book also comprehensively includes all the information from its predecessor versions while also highlights other compact cameras that were produced by other manufacturers on behalf of Leica making this a quite encompassing read.

Thanks to Leica Rumors for the info.