CNet has published a new review on the Olympus . They like the camera overall, but without compromises.
The good: A dust-and-weather-sealed design distinguishes the Olympus OM-D E-M5 from the rest of the interchangeable-lens crowd, and its class-leading performance doesn’t hurt, either. Plus, it’s got an interesting, relatively streamlined shooting design.
The bad: The photo quality is solid, but not outstanding, especially if you shoot only JPEG.
Their bottom line: If you’re looking for something a lot better, faster, and more sophisticated than a point-and-shoot that can stand up to your adventures, the Olympus OM-D is a great choice.