If you read up Netty´s Royal News you´ll find out that every pregnancy so far was officially announced about 6 months before the due date, also announcing the due date, almost always together with some private comment like:" We´re looking forward to the birth of our fifth/sixth/eights a.s.o...grandchild..." I´m surprised anyway that she considered a very insecure statement in "Billed Bladet" immediately as for sure and wrote it as source in her "Upcoming events".
I could only imagine that they want to keep back with announcing good news because of the Greek financial crisis but then they shouldn´t have celebrated the wedding so opulent either.
Tatiana said IMO sometimes a bit too often in interviews or so that she didn´t want to be asked private questions, whatever that may mean but to disappear completely right after announcing the pregnancy is IMO ridiculous. I wondered whether it has something to do with the rumours that they moved to New York but even there they were photographed at charity events earlier and smiled into the camera.
I tent to suppose she isn´t pregnant at all because even Constantine´s alleged comment about the due date (between April and June) or that they don´t allegedly want to know the gender is IMO only a rumour. If we were sure he made those comments (in some Swiss newspaper) then we could be sure she´s indeed pregnant but we have no proof into the one or other line.