Yes, it says that the centre shall not publish the award without the consent of the parties. The centre shall, however, promptly include in its publication excerpts of the legal reasoning. So they can put the legal reasoning if someone for some reason tries to say they don't want the particular facts. It is unheard of, frankly. If you look on the web you will see that you always get the full award.
The other really important point here is from a Canadian perspective. Our FIPA requires publication of the entire award, and it would override any kind of situation where someone might say, under article 48(4), they only want excerpts or they don't consent. So we've taken care of that in our FIPA.