I got to thinking about this the other day and was curious if anyone had any thoughts on it. Was it because they couldn't get a faster focusing and/or make it a faster lens without increasing size? Going through the 17mm 2.8 thread it seems like it is pretty good optically. Maybe not up to the 1.8 but still good. I was just curious since Olympus pretty much started MFT to keep everything small and don't get me wrong most of the lenses are small but I was just wondering why they haven't tried rehashing that 17mm or going for a different focal length. To me it seems Panasonic is more on the keeping it smaller, considering the 14 20 and the new 15 (even though its not a pancake per se, it is a pretty small looking lens). Love to hear your thoughts on this.