I don’t think they can eliminate the notch on such a small iPhone , me I love Face ID but if I have Touch ID under the display and no notch I won’t mind . I just want a smaller iPhone with a iPad Pro designHow did you infer this?
I would assume all three phones will have FaceID as in this year. There was a mention of under the screen Touch ID possibly being included but may not be ready until 2021. I wouldn't count on any kind of fingerprint sensor in next year's phones with the exception of the rumored iPhone 8 rebranding.