Some working professionals want reliability and stick to what has been tried and true over the years, many will stick with the 1dxIII and would be hard press to get the latest new camera on the market, The rumoured R1 won't fill those shoes just yet.There has been much fervor about this on the 'net. "I just bought my 1DKMkIII and now an R1 is coming...Canon screwed me.' type stuff. As with anything on the internet, it certainly is possible its a vocal minority. But I also think Canon, like Sony, Apple and everyone else, likes to maintain a relatively predictable product cycle. And the 1DXmkIII would have been much shorter than standard. Its not about 'extending' the cycle, as much as it is about maintaining the cycle. You can count on a new iPhone model every year, but the first time they shorten it to 6 months, someone (or many someone's) may get ticked off. Certainly with the retirement of the EF mount, all bets may be off this time around.