I am quite interested in this game, actually. The artistic design of the game looks impeccable, and watching this game in motion can actually be breathtaking. I've heard it takes a lot of inspiration from Ico and Shadow of the Colossus, and that more than anything has me interested in it. I don't know if I would buy this game for myself, I'm not really sure why, just doesn't seem like my kind of thing. If I'm going to sink some time into a 1-player experience its going to be Fallout 3 or Fable 2, and it is nearly impossible not to be surrounded by excellent multiplayer games right now.
I think once Christmas gets closer, and people get some time to sit at home and play video games, PoP will start getting more attention. It just doesn't have the hype of a Fallout or the pizzazz of a Gears. I think its going to be a game you're going to have to play to really get a sense for what the game is all about. Communicating the world of Ico through 30 second commercials was impossible, and such is the case here as well.