Media and Games Online Network have a posted a preview of Prisoner of War. Heres a bit:

    The game will also use a very clever icon system which helps you orient yourself in the 3D prison camp world. Icons will be used to indicate guard positioning. These icons will change to indicate when you have been discovered in an unauthorised area, and if a guard is merely suspicious or actively giving chase.

    This sort of system has been well used in games like Tenchu and Metal Gear Solid. The approach has been further refined in Prisoner of War with the icons moving around the edge of the screen in a way which indicates which direction you are being pursued from.