I still think Canon has to respond with a sub $2K FF with cutting edge low light capabilities when I see stuff like DP's just-today released review of $1300 Sony NEX7 that now "in terms of out-and-out image quality probably the best APS-C camera yet, regardless of size" and "offering excellent high ISO performance for low light work, with quite usable results up to ISO 6400".
How will this compare with the 5MDII? Could a similar challenge of improved low light performance come from a $1800 Sony FF if they bring one out soon? Or a $2000 Pentax FF (isn't the APS-C K5's low light performance 'close' to the 5DMII)? How will a $900 Rebel T4i with Digic 5 hold up - might it be within a half stop (the 7D sensor is only a stop worse)?
That's why Canon can't price their least expensive NEW bottom-of-the-line FF at $2700, or $3500 for that matter (it almost seems that some on here don't want to see a <2K Canon FF... is that a case of 'keep the FFs out of the hands of the masses' attitude, or a case of 'I had to pay $3200 for my first FF, you should too').
Competition drives prices down, economies of scale drive prices down, a maturing market segment drives prices down. IIRC, the 5d came to market around $3299, and the 5DMII at $600 less, I am convinced they can do a 'lighter build' FF with cutting-edge low light capabilities for $1899.
And now they might just have to!