This is a fun thread, I admit it, something that should be able to be deduced, but I am struggling. Here is what we can start with.
OK, so what photography marketing dept. would contact a known wedding portraiture in the UK, and not London, to ask him to participate in field testing a FF rangefinder ? From what I can guess, Canon is pushing the 7D as a wedding camera solution, with it's autofocus and HD. As a 'Canon Ambassador' for the past 2 years, I can't imagine he would slip out something like that, without their approval.
A 35mm 1.2 is a fast lens, and a desired focal length amongst aficionado's of rangefinders. I think it's safe to say this is a new mount, and alluding to other lenses being introduced, it's not a fixed lens. Who is making such a lens or who has made lens like this in the past ?
Who would use magnesium alloy on a body - vs. a metal chassis with a High-impact plastic outer body ?
"Advanced AF", Hmmm, that should be a clue, especially since this is described as a RF.
There are probably more clues to go off. But for some reason, I think this is Fuji, they have been relatively quiet, they had little to announce at PMA.
Hassleblad and Fuji, working together in Europe, something more affordable than the Hasselblad H3D, something to compete against the M9 with. Maybe..