i played it at TGS. being disappointed with SO3 and not liking the look of the scans that came out before TGS, i didn't go in with high hopes, but it was better than i expected. it looks *way* better than the scans give the impression of, IRL. there's a nice bloom effect that's fairly subtle, and the character animation is good. the battle system is similar to SO3 but the AI seemed less stupid (not hard). you could also rope them together to make them gang up on a specific enemy.. i'm sure there's more stuff there, but it was like a 10 minute demo that was half story.
anyway i'm interested but not excited.