The camera the same lens, the same sensor and the same screen as the Olympus ZX-2. Probably these cameras were made by the same manufacturer.
Put the new Fuji sensor into the X100 and you have a much better camera than the Sony RX1. The Fuji is smaller if you consider that the X100 has an optical and electronic viewfinder in the body... and the lens is smaller too. I hope Fujifilm make soon this camera. Ahhh, the Fuji is cheaper too!