"Fortunately for us at the Panasonic press event in Barcelona this week, Lumix DMC-L1 bodies provided by Panasonic for our use had just been updated with final production-ready firmware.
The L1's Leica Vario Elmarit 14-50mm f/2.8-3.5 standard zoom lenses provided were mechanically and optically production standard, but one more firmware update was expected. I had some intermittent focus mechanism problems when trying to use this lens on an Olympus E500, which Panasonic attributed to the E500's firmware (v.1.1 rather than the latest v.1.2) and the intermediate firmware in the lens." Read the full article here