I just updated the firmware on my o12-50 to version 1.3, the new version released today. Everything went smooth with Olympus digital camera updater. The firmware updates are: "Stability of lens aperture when shooting videos has been improved" I haven't noticed any instability (I also hadn't heard there were supposed to be any issues), but I have only had the lense a couple of months. I have a feeling this update has something to do with the soon to be announced em5ll. I also updated my ep5 to ver. 1.6 and my o45 to ver. 1.1.