Just got a K-m in today...bought it for my sister, but I couldn't help but take a peek. Won't be able to do any tests but here is what I took in about 30 minutes of playing with it.
The K-m is REALLY small compared to the K10D. The interface is nice and more modern and since there is no top LCD the shooting info (ISO, aperture, WB, etc.) shows on the rear LCD. The 18-55 L lens is really light and feels like a toy. It seems to be all plastic and is also very small. If I remember, it is smaller than my kit 18-55 from my K10D. Image quality is probably on par with it as well. The shutter sound is also quite different. Still noisy, but not as heavy, if that makes any sense. Besides size of the camera, what surprised me the most was focus speed. Sadly, I cannot give any scientific evidence, but I am convinced it is faster than my K10D. I used both a 50/1.4 and a DA* 50-135. Shots were taken indoor (at my office) but with good light.
I know it's not much, but I was impressed with the K-m. The size is really nice maybe to take on travel. And the focus speed, it really seemed noticeably faster while still being accurate. Maybe others can share their experience. Hopefully, my sister will take it out soon so I can get another chance to play with it
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