I was wondering why the 5DIII came out BEFORE the 1DX camera, while having a similar AF unit...
I'm now wondering if Canon wanted people to figure out the quirks of the AF before releasing these features into their more professional body.
Just idle speculation on my part, lot's of companies do this sort of thing. Usually in reverse though, they take the exotic new technology and put it in top tier expensive equipment, and there the bugs are worked out, then production is ramped up and prices come down, and it trickles down to the more mass market people.
Let me tell you something more relevant regarding the topic subject:
I have a good friend that works as an engineer in a car factory... the new SUV model was launched recently. Like many cars/brand lovers i wanted to buy a new car..... i asked my friend about the reliability of the new car.
Hi told me:
Nik, regardless how much we test the prototypes for problems in the series production we will encounter much more problems than we originally predicted . After 6 months of large scale production we evaluate the clients complains/problems and make the first ''full production'' corrective measures. After another 3 months they are fully implemented. ..... So, if you want to buy that car and be much more confident that you will not have any problems wait at least 10 months-1 year from when sales to the population have started.
I pretty much believe this criteria is aplaying even to the DSLR production.
I don;t say that the first cameras that where produced are bad or broken models, i say that the probability to buy a camera with some problems is more high.