Second edition of Gunter Osterloh’s “Leica M: Advanced Photo School” is now available for pre-order on Amazon:
This is the book description on the publisher’s website:
“The ultimate Leica guide-written by the company’s top technical expert-now includes the Leica MP. This classic source contains a goldmine of technical information and insider knowledge, and covers Leica’s famed lenses plus every film model from the M1 through the MP-along with schematic diagrams and explanations of metering, focusing, flash systems, film advance, and more.”
I guess digital M will not be covered (or they just used the description form the previous edition).
The old, first edition of the book is no longer available: