Microsoft had disclosed their PAX East line-up quite some time ago and it basically consists of the stuff you’ll just go and purchase straight away. The line-up includes Dead Rising 3, Forza Motorsport 5, Killer Instinct, Plants vs Zombies Garden Warfare, Ryse: Son of Rome and Titanfall. Another good thing is that Project Spark is going to be there (which is not out but it’s in open beta), as well as Kinect Sports Rivals.
What will be worth watching is some of their ID@Xbox content which comprises of just Super Time Force and Strike Suit Zero: Director’s Cut.