The Olympus OM-D E-M1 is a new professional Micro Four Thirds camera that is fully weather and freeze proof with improved autofocus and a larger electronic viewfinder compared to previous models. It has a professional build quality similar to full frame cameras like the Nikon D800. The camera is expected to be announced soon and may cost around $1500, positioning it as a higher-end and more professional option than the earlier Olympus OM-D E-M5.