Hopefully Touch ID comes back in some form. Although it’s doubtful as Apple may incorporate FACE ID into the iPad. If that’s the case it’s doubtful
Touch ID was more versatile and loved by the majority.
If Touch ID makes a return at all, it’s likely only going to be if there’s an updated iPhone SE2. I truly don’t believe Apple is going to be investing any form of touch ID from this point further. Apple claimed they even tested Touch ID under the display, but face ID was always there main goal.