I think the 7D3 will come in the form of a R variant at some point , for the 90D this will be a great upgrade to the 80d and coming from a rebel also makes it come closer to bridge the gap from the 7D line. Just a hunch that's all .
This will be a big upgrade for me coming from a 450D to the 90D , i have a keen eye and the older rebel still got me good shots but i was in the end limited, so cant wait for this to be honest. anyone going from a rebel or even a 60/70D..etc this i am sure will not disappoint.