Steve Huff has been out on location with the new Sony A7 and A7r plus a bagful of Zeiss and Leica lenses. He is more than usually excited and, even, seems to prefer the cheaper A7 over the 7r with its naked 36MP sensor. Last word:
The IQ coming from these JPEGS is astonishing. They look better to me than what comes out of my Leica M with color and sharpness. High ISO as well. While the cameras are not perfect (loud shutter, not Leica build or feel, not the fastest AF using native FE glass (not as fast as E-M1) and an overall slower feel when using it (then again, so is medium format) the Sony A7 and A7r are quite special for what they offer at their price point. I would take one of these over ANY full frame DSLR any day of the week, and at a small fraction of the cost of a Leica M body, there is nothing bad to say about the A7 and A7r. In fact, I think it has some of the M9 look mixed with the M look! Using it is not the same as an M but the results ROCK.