The Japanese website DSLR-check (Click here) posted a set of image comparisons between the 14-42mm pancake X zoom and other lenses. What’s really interesting with the test is that he used the lens on both Panasonic and Olympus camera. As you know Panasonic has a lens correction while the Olympus has not. You really can see the difference! At first glance I wouldn’t recommend that lens for the use on an Olympus camera if you shot JPEG’s only. Otherwise the lens performs very well on the Panasonic cameras! And keep in mind how tiny that zoom lens is, that makes the image quality of the lens look even more impressive!
You can click these links to search for 14-42mm X lens preorders: Amazon, Olympus US store, Adorama, B&H, eBay The Panasonic 45-175mm X lens is in Stock in some stores. Check at Amazon, Olympus US store, Adorama, B&H, eBay.