While I prefer a Sony sensor in a high MP Canon camera ahead of yet another DR flop (which would just be a massive disappointment in a high MP body coming out today), it's a bit sad if Sony is going to totally own all high resolution cameras, both 135 and medium format.
It would be nice with at least one competitor that could reach the same level, but right now there isn't.
In practical photography DR is not everything though (I know, I shoot CCD...), but in making a camera of this type popular among the consumers DR is just as important as the megapixel count.