Who needs a MkII?
I would put Contax 645 with P65+ up against any system out there. Perfect? hell no. damn good? you bet!
I think everyone agrees that the simplicity of the Contax 645 is great. So the lenses and the accessories are.
Still I can imagine 1 to 10 things that could be improved. AF speed and AF accuracy ... the new Hasselblad AF recompose thing would also be very nice.
But if Michael says there's a new MF camera "that's going to knock everyone's socks off" I guess it's a CMOS based camera/back with live view and better high ISO performance (maybe at the price of slight losses in IQ at base ISO) ... otherwise I don't think it would knock anyone's socks off.
A 43.4MP, 1,7 fps, ISO320 MFD would not be very interesting...