Sure, you've seen cameras with interchangeable lenses -- you might even own one or two -- but a cam that lets you swap out the sensor with the lens? Now that's pretty unique. Ricoh's GXR has been around since 2009 and does exactly that, with four lens / sensor combos, including two zooms and a pair of fixed lenses. Now, the company has confirmed that its new Leica M-mount module will ship on September 9th, letting you use your existing Leica lenses with the GXR. The module includes a 12.3 megapixel APS-C sensor and has a 27.8mm Leica M bayonet mount, with support for RAW image capture and 720p video. It also has an "open" price, which means it's still anyone's guess as to how much you'll be shelling over. But if you own a collection of Leica glass and are interested in experimenting with such a unique sensor-swapping camera system, you're probably somewhat open to open pricing.