The unit you posted is of a type that replaces only the display, but not the actual NTG4.5 unit.
The new Android 10.25" has a built-in Android head unit incorporated into the back of the display.
So in essence you have two head units, sharing one display. I.e., you can always click a button and switch back to the NTG4.5 unit, with the new unit's display in 'pass through' mode allowing you to use the old NTG4.5 unit with the new Android unit's display.