Just played the demo and enjoyed it!
Although impressed by the game generally, (must look amazing for physx users - when that gets sorted anyway), I probably won't pay release price for it, will wait for it to drop down just a little. Not a certainty though, might sucumb to it since it did impress me more than I had expected.
The graphics looked pretty darn good, nice contrasts throughout. The fire effects looked excellent, possibly the best I have seen in a game to date. Some nice sense of realism with the graphics used. Well implemented.
Ran the game with no AA and obviously no physx, ran perfectly. If they can sort out the AA or physx issues before release then great, otherwise still a potentially good solid game.
Not sure if I can be arsed to play the first through before the second arrives on my door mat.