Mt. Spokane, did you see this improvement in portraits of people?
So far, my portraits have been done in very low light, and I have corrected the color temperature. However, I have noticed, and posted about it earlier that intense reds are no longer oversaturated as they were with my 5D MK II.
Are you referring to jpeg images? I haven't taken any, and only beta versions of Abobe Raw converters are available. I haven't tried viewing my raw images with DPP.
With Adobe, or with DPP, simple variation in monitor calibration or room lighting can skew colors slightly, so we may each be seeing a slight difference. If you see too much red, its easy to tweak the import profile in ACR or Lightroom to give a tone that you prefer.