3D touch is still there above the settings for Haptic Touch on my XS Max, so it can still be used, but it's just ”one level” and does the same way as a ”long touch” (i.e. Haptic Touch).
By the way, does anyone notice any difference between the ”Fast” and ”Slow” touch duration settings? Seems about the same to me...
Edit:
Okay, there is a slight difference but I think it's hard to tell there on the test image. More noticeable for me for icons on the home screen (for example) for some reason.
Edit 2:
One problem I see with Haptic Touch is that it relatively easy can be accidentally activated on an item (happens to me quite often for links on pages in Safari for example). Not so with 3D Touch. While there is an option to disable 3D Touch I see no way of disabling Haptic Touch and using only 3D Touch for those of us that has a device that supports it. Too bad…