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).
While companies like Canon and FujiFilm prefer to fly in the face of PMA and announce their cameras well ahead of the trade show, others, like Leica, have decided to hold their cards 'till the last minute and show off 'em at the show itself.