What makes you think the US market will only have it for 3 years ? The last civic was a 6 year run (5 for ctr). I'm sure Honda will do the same with the 11th gen.
If I was a betting man. We'll see a 5 year run for CTR in the US. I can't see all that testing and tuning to have it only sold for 3 years. The rumor might be true for Canada.