You are both right, I stand corrected.
from the AIP sup point 2.6 :
The vertical guidance is based on Baro VNAV with GNSS and requires RNAV equipment which uses barometric altimeter input.
What confused me was the fact that the guys at the meeting kept reffering to the 3D in conjunction with the "ground augmented" LVPs APPs.
While it would seem Baro VNAV is indeed part of a 3D APP.
The rest of the AIP sup is interesting too, thanks Sleeper.