You know what, I think has to do with politics and crap. Aka, let's make the camera only so much better so that people might want to upgrade, the way Canon pretty much always does. Instead of really taking the advantage of the available tech.
That's called marketing and generating sustainable profit.
Yes, I agree with that, but I'm still allowed to think it's BS from a customer p.o.v. I hate spending $6800 on a camera every two years, only to know that they COULD have done it better, and that I pay that kind of money from a small upgrade. Having that said, the improvements that are done are great ones. I for one always buy a camera from AF-system first second and third, then the fps and noise levels. So you can imagine me being a bit upset with the mk3, now, the mk4 is a MASSIVE upgrade, but still, one shot and or slow moving subject in indoor light makes it miss a lot, and if there's a lightsource on the sides or behind the subject it's hardly perfect. So if they can make this truly better with the X, I can live with the noise. Adobe needs to update and keep ut with Lr also. Then we're gettin somewhere...