Actually support in regards to win-7 ends in 2020 and I imagine depending on many users it will be extended just as x-p was,
Intel on the other hand is 18 months there is a difference :)
Besides that is only in regards to new drivers your cpu or mother board will not stop working :D
Support on the other hand depends what type of problems you might face = probably none is my guess it's just a scare tactic to upgrade.
M$ is desperate to make everyone buy into this silly upgrading and eating as many win-7 licenses as they can
There's no real reason 7 and 10 can't coexist except M$ doesn't want 7 on the market anymore.