The reports I've seen from real photographers using the DMR, whose pictures I can see and verify they know how to shoot, not a photo magazine directed at consumers who mostly can't afford a DMR. They all have very positive things to say. Several of them are also users of Canon 1DS-II and not simply Leica fetishists who would swoon over a cowpie if it had a red dot. The only complaints I've heard thus far of a substantive nature are high-ISO noise and the slow frame rate, which kind of cancel each other out in significance in terms of appropriate uses for the camera.
I bought a full set (R8, 15, 21, 35, 50, 90, 2x, 28-70, 70-210) for less than the DMR's original $5000 price. Then I handled the DMR and recognized that it made the R8 bigger and heavier than I could stand for a travel camera, my main use. I also realized that for the cost, the slow frame rate and high-ISO noise would further limit the usefulness for me, and I'm not one who can afford two full digital SLR systems. By that time the price of the DMR had already skyrocketed another $1000, which was the final deal breaker. I also had plenty of time to shoot the R stuff with film and was not impressed that it was any better than my old Pentax SMC screwmounts, in fact the SMCs flared a lot less in shots with the sun anywhere in front of me. So I sold the entire R8 system. That doesn't mean the DMR is not good, just that it wasn't good for my needs.
BTW, Imacon doesn't make the chip for the DMR, Kodak does. Imacon did the firmware etc. The specifics of the Digital M being bandied around on forums come from 3rd-hand repetition of things Stefan Daniel said in response to questions posed to him at the LHSA annual meeting. It is unclear whether the chip in the Digital M will or won't be the same as the DMR., only that the firmware will be done by an unnamed German source, not Imacon. There is also speculation that the Digital M will sticker for under $5000, which seems worthy of skepticism since an MP based largely on amortized tooling and technology dating to 1984 now costs $3300.