About a decade ago most DSLR Cameras used Compact Flash Cards. Then some started appearing with SD card slots, even an early 1D came with dual CF/SD slots. At the time it was thought that SD would dominate because they were faster. The CF group came back with even faster versions and the 1D's went back to dual CF slots.

Today it looks as if CF has stoped at 160MBps while SD is now at 250MBps. SD has won the race for speed and the 7D2 will come with both CF & SD slots. Does this means that Canon will transition all their bodies, even the 1Ds to SD?

Will Canon move to CFast because it's capable of 1GBps speeds.

What ever happens its going to be an expensive exercise for those on CF to transition to a new format.