IMO I think that we'll see it on every DSLR from a future 5D to entry level cameras. Just like the useless MP race to attract people that don't know any better Canon will add stuff like this and a direct print button before addressing issues that their core group of advanced users needs first.
All the manufacturers are obviously in business only to make money, and they will squeeze out small improvements every 1-3 years to keep us replacing bodies over and over. Gone are the days where you can buy one camera and use it for 30 years. I'm hoping once they go 16 bit in a couple of years the focus will be back on the durability of the body and quality of the lens line up.
Or maybe in a couple of years we'll be taking all of our images with a camcorder ...