What do you think?
I think we are now at the saturation point of digital capture where anything past 20 something megapixels will do for 99.999% of all use.
A 54mm square Nikon will produce a 116 mb file, native 8 bit file which is more than overkill for any standard page size from 11x14 to U.S. 8.5x11.
In fact a Canon 1ds3, or Nikon d3x shot horizontal and processed in it's native format will crop a full page vertical with room for bleed and some slight cropping at 300 dpi, so this just takes it another step.
Whether Nikon goes this route or not, is all rumor, but if it happens and it has the useability of a D3 or D3x with the resolution stated and the price is not astronomical then who knows how this effects the current medium format backs. Once again it all depends on price. If it comes out at $20,000 then probably it's just another niche player, $10,000 then it's a game breaker, less than $10,000 then it's a world beater.
You know that if it does happen that it changes the face of medium format because obviously Nikon will produce an excellent lcd, probably good medium to high iso, and excellent auto focus.
It all depends on price and usability. Right now in today's economy if you have an investment in Nikon lenses a D3x makes more sense, if you don't or your moving from Canon or thinking about your first medium format purchase then it probably will be a hard option to pass on.
Still, it's interesting how far Nikon has come in the last few years. If they do make this camera they will pretty much cover the professional area, from pj and sports all the way to high end advertising.
If Nikon does this, it will be smart as most companies right now are only looking at sort term goals, short term fixes. This type of system is a long term investment but would put Nikon in a place to completely cover the market and don't forget that Nikon already has a huge dealer network and installed user base.
If it does happen there is one thing you can be sure of and that is the forums will light up with more brand comparisions than ever, claiming ccd is better than cmos, etc. etc. etc.