411A - I checked St. Paul (MSP) and the only thing that hints towards a dGPS approach is the note that "RNP 0.3" is required. I have seen this also with the ILS approaches into PHL (forgot the terminology), so I am not really sure, what RNP 0.3 really refers to....
To cut a long story short. None of the approaches plates I have seen, indicate that a dGPS approach.