3D Touch Is Back
It’s official: 3D Touch functionality is back in iOS 13 beta 4 and is working as expected. (If it isn’t functioning properly for you, you may need to head to the 3D Touch settings in Accessibility and try different options.)
On the other hand, it does appear that 3D Touch has changed slightly and may no longer rely as heavily on pressure sensitivity.
According to user reports, some actions (like Pop) are unavailable depending on the app, while other actions are still conflicting with long presses and Haptic Touch. Based on this, Apple is likely still refining 3D Touch to work with Haptic Touch even as it’s being phased out.