I just reviewed the pixii.fr website.
The Connected tab focuses on the ability of the Pixii to connect to a smartphone. Looks like they put a lot of effort into optimizing that connection and the app they provide.
The Rangefinder section mostly focuses on the coupled RF mechanism, but uses amusingly non-technical language IMO.
The Specification list seems pretty complete. I noted micro-USB interface rather than the higher-data rate USB-C interface, a few other details. Native ISO 320 for the sensor seems a bit high: with fast lenses and the desire to shoot wide open, you'll use those high-speed, short exposure times. (BTW: the Leica CL eshutter can go up to 1/25000 sec, only about 1/3 EV longer than the Pixii.) Nothing wrong with using the eshutter at higher speeds, in my experience it's less likely to show rolling shutter and other adverse effects used that way.
The UI seems simple and uncluttered, nice. If the interaction with a smartphone works as advertised, it will be nice too. The 12mpixel output is a bit low, but I also noted that the sensor stack is thin and should allow for high quality performance with short register lenses, much like the Ricoh GXR with M-mount camera module.
The price point competes almost directly with the Leica CL but it is a different kind of camera. The service and support issues remain a future discovery thing, same for reliability and durability. A point of fragility in the system is compatibility of the app over time, through iOS and Android changes. Stephen's report that the camera build and the packaging are all first class is encouraging and sounds similar to the Light L16 in that respect. (The L16 is in a similar position of fragility with respect to its dedicated macOS and Windows rendering app "Lumen", btw, since Light has moved on from producing hard products and the L16 is discontinued now.)
All in all, it looks like a very interesting new camera. Since I have a full complement of Leica M lenses, I could get one to play with for $3300 and see if it had value to me. But that's a chunk of change for a 12 mpixel camera. The Sigma fp is similarly interesting as heck and is about 2/3 that price. And, realistically, I really don't need any more cameras at all... !!!
But interesting remains interesting. I haven't talked about my rekindled interest in high end mechanical watches .... LOL!
G