Should Touch ID come back?

Apple's new iPad Air relocates Touch ID to a button on the edge of the device. The company's upcoming iPhone 12 lineup should do something similar, giving users an option between unlocking their iPhone using their face or unlocking it with their fingerprint as the world combats the novel coronavirus pandemic... More here.

That makes perfect sense, but I suspect that Apple would not have had time to do such a thing. Or, is this the reason why the iPhone has been delayed until October?

It would be a good move because, like so many others have said, using the iPhone with a face mask is painful at times.