If you own a PlayStation 3 The Last Guardian is a game you are going to play. It just doesn't make sense not to. How you will play the game, however, is still up in the air at the moment. While neither 3D nor Move support are currently in the game the developers are looking into making it happen.
Speaking at TGS Lead designer at Team Ico Fumito Ueda addressed 3D by saying (through poor translation), "We're still looking into this. In its current state, we've pretty much used up the full system specs. However, we'd like people who don't normally play games to play, so if it can reach these people, we'll think about it. With this meaning, it's not the case that there is absolutely no plan for support."
He then discussed Move as a possibility, but said that "even if we did adopt Move, it would be Move compatible, and not exclusive."
Who cares? I doubt anyone. As I said before, you'll be playing this game even if it gives you an electric shock every ten seconds.