Neither model comes with any additional numbers in their titles title, however -- that's a conscious decision on Leica's part to rework its naming policy.
We can't comment on image quality just yet, but there's no question that the "new M" marks Leica's commitment to finally bring otherwise commonplace features to its popular (and pricey) rangefinder line.
The cameras were revealed along with a slew of new products that Leica's showing during Germany's Photokina convention, including a range of new accessories (the Leica R-Adapter M, the Leica EVF2 electronic viewfinder, the multifunctional handgrip-M with optional finger loops, and the Leica Microphone adapter set).