As you remember Canon is using a Four Thirds sized(!) sensor on the Canon G1X (here at Amazon) which is a tiny bit larger than our Micro Four Thirds sensor. Consequently there were many rumors supporting the idea that the new mirrorless system from Canon may use that sensor. According to my trusted sources this may not be true. They will almost certainly opt for a classic APS-C sensor. Whether this is good or bad news for us I can’t judge now. Certainly it will be a challenge for Canon (like it is for Sony) to create compact lenses. Here lies the advantage of the m43 system.