You're going to feel awfully silly when this thing gets reviewed and it's Pentile. If it was RGB, Samsung would have said so by now. It was the whole reason they put the "+" in their last screen iteration. Notice how this one has no "+"? Every AMOLED screen is Pentile unless you hear the magic word: RGB.
"Samsung can't get high enough pixel density with AMOLED" was what I was arguing with. The pixel density is very high. They weren't "forced to just keep making the screens bigger" as you claimed.