When I checked out one of the new MacBooks, I knew that pressing the trackpad wasn't really clicking physically, but simulating it. But my fingers couldn't tell the difference.
The Apple Watch does other interesting touch "feelings". Taps when you get a message. Try to scroll beyond the end of a list with the crown and there's a bouncy feel as it snaps back.
It's pretty positive that will be added to the new iPhones next week. I think everyone is thinking about the "Force" part of it, missing the "Touch" part when it comes to iPhones.
Buttons that have a "click" feel when you press.
Lists that bounce back when you drag them too far.
Photos that give a "stretchy" feedback as you zoom in.
Games get interesting too, pieces that "click" into place as you drag them.
Hopefully the "taptic" hardware can simulate all sorts of interesting feedbacks.