Can't wait to see sample images and sensitivity comparisons...
Actually NO! The trend with MF is to optimize the ISO availability ;-)
A plea to the more knowledgeable people here:
Could you please enlighten me why Canon is going for colour that actually eye perception is UNABLE to differentiate? Or I misunderstood it?
You can read this about the Phase One IQ250http://www.luminous-landscape.com/essays/the_phase_one_iq250_cmos_fully_realized.shtml
quoting the section on the CFA:
"As one example, the selection of a CFA, the color pattern put in front of the sensor, is a choice between quality of color, and ISO performance. If the CFA allows each pixel to see a broader spectrum of color (e.g. for the green pixels to see a bit further into yellow) a camera’s ISO range can be modestly increased. The resulting loss in color quality is subtle – subtle variations in color are missed and a handful of specific colors become difficult to photograph. In a market where a ISO 25,600 camera has a leg up on a ISO12,800 camera, the engineers are under enormous pressure to pick the modestly increased ISO over subtle color quality."
The trend of going to more ISO in MF is because CMOS has become available just recently. The olde CCD tech was just not capable. Still The IQ250 is capped at ISO6400.
Stay at MF-oriented forums for a while. Color is a big thing there. What's real and what's imagined differences is harder to understand, but even microscopic differences are important to that kind of users. So if you want to get good credibility in those circles this kind of optimization, regardless of how subtle it is, is valuable.