Last wednesday I received my OM-D (E-M5). It's replacing my old Pen (E-P1).
The camera really rocks, the autofocus does exactly what you want it to do and the viewfinder is so good that I'm probably going to use that a lot! I'm also pretty impressed by the 17mm lens that I mainly used on my E-P1, on the pen it was really slow, now it's really fast.
There's only one flaw, the image stabilization makes a noise like there's a fan spinning inside the body. When I switch that off the sound is still there, when I go to video mode the sound is almost gone. Olympus (netherlands) told me that this is something that can't be switched off (also not with a future update). Anyone here with a OM-D and what do you think of the sound?