Assassin's Creed II is coming out Nov, the 17th. A historic action adventure where your an assassins killing to save the world or something like that. Kind of reminds me of the movie Wanted's assassin's ideals.
Anyway here's the trailer for it check this bad boy out. Trailer
Saw is coming out Oct, the 6th. This is based of the movies by the same name. So I'm sure it will be gruesome but will it be good that's the question, I guess we'll have to wait and see.
Here's the a clip of it. Game Demo