Doubtful. They've not done that in the past and the PR would be really bad. They'll just annoy you into upgrading:
Dialog Box 1: "You should upgrade to the latest firmware"
You: Click (or squish or tap or however we indicate feedback).
Dialog Box 2: "Did you really mean to bypass this nice firmware update?"
You: Click
Dialog Box 3: "I'll give you a cookie."
You: Click
Dialog Box 4: "Please."
You: Click
Dialog Box 5: "YOU REALLY, REALLY SHOULD INSTALL THIS UPGRADE. IF YOU DO NOT, UNSPECIFIED BAD THINGS WILL HAPPEN TO YOUR DOG".
You: Click
Dialog Box 6: "I'll start singing ...."
You: "Oh crap, stop it already, I'll upgrade".