After a carefully constructed teaser campaign Olympus has officially launched the E-P1, its first Micro Four Thirds camera and the worst kept secret in the photography industry, thanks to a deluge of leaked information ahead of launch. It's a compact mirrorless interchangeable lens camera that mimics the styling of the company's Pen range that was popular in the 1960s and 70s. The camera is built around an image-stabilized 12 megapixel sensor and incorporates a 3.0" LCD. The E-P1 is available with a 14-42mm kit lens that retracts into its barrel when not in use, much like the lens of a compact camera. Check out the news story, lots of samples and our full hands-on preview after the link. Update: Second gallery of shots from the European launch in Berlin, including the new 17mm pancake lens now added.