SO, the troll face means it is a hoax or joke? Lol, somebody on wiidev called sven a troll;-) Random when I mentioned sven's twitter directing somebody to #wiiudev, somebody called him a troll. FUNNY, maybe another hint about the diagram.Yes, actually, it is.
I brought the image into Photoshop and messed around, and also found the troll face. And if you tilt your screen while looking at the original, you can see it as well.