Crab,
No, it is saying that Differential GPS will be required.
However, these approaches will still need some 'device' to establish the obstacle environment - that device is presently the Airborne Radar. What DGPS achieves is to more accurately position the aircraft than with existing nav aids - this will permit the MAP to be closer to the platform; and of course there is the provision of vertical guidance.
One of the continuing issues is the loss of the ability to approach from any direction - once that has to be decided by the software, it will require extensive modification.
Jim