Come on guys, haven't you been on this site the last couple of months? The iPhone 8/Edition/Pro won't have TouchID, that's about 99,9% certain. The tech isn't there yet to get it under the screen reliability wise, speed wise and mass production wise. It's also not going on the back or the phone and there is 0 indication it will be in the power button.
Almost everything is clear regarding the hardware, the only real mystery is how apple is going to handle the home button area and parts of the screen next to the notch software wise.
I'm still holding on lol.