I ask this question because from a personal perspective M43 has had a hell of a year in terms of improving the system. First of all in terms of cameras.... The OMD was a major breakthrough for the system. Much of the credit (most probably) goes to Sony here for introducing a sensor that really raised the bar. But credit to Olympus. I would argue that the camera sort of took them from some way 'behind' Panny to some way 'in front'. Then there are the lenses... Panny really deserves great credit here for the 12-35 and the 35-100. They have received some criticism in some quarters but seem to have grown on most people who have bought them. Then we also have the 75/1.8, the 12/2.0 and the 60/2.8. All great lenses. So really it has been a great year (with the GH3 at the end of it.) But the reality seems to be that the system isnt going forwards that fast - it is losing market share to new formats like Nex and Panny seems to be losing ground entirely. Even M43 users dont seem entirely happy. You hear things like 'I am only sticking with M43 because I have an investment in a large number of M43 lenses' or 'I will move to Nex once they get their wifi app store up and running'.