This game was why I bought the PS3 a year ago as well. I played for 4 hours last night, and I have to say, the gameplay is phenomenal, and is seamless with the story. The epicness has reached a scale that is only seen in film right now, rivaling Glen Cameron movies, or even the LOTR trilogy. So far I have recognized some enemies, but they are far more detailed, even realistic, than in the first two games. Every movement looks life-like, and the detail is so impeccable that every move can be seen from start to finish. The polygon feel that still exists in all other games is practically eliminated, in the entire environment of the game. Everything looks real.
Additionally, with my Z-5500 on DTS the sound is amazing, and very accurate. The colors are breathtaking, and pretty much the entire spectrum can be seen at any time, adding to the stunning feel of the game. Also the changes made to Kratos' moves and controls are definitely welcome. His bow is no longer attached to magic, so it becomes much more practical to use. Also, being able to see exactly how he controls his chains is groundbreaking.
I could really go on and on about this game, so I'm going to stop and play a little more later and see what else it has to offer.