On its way is 'Crysis' the Sequal to FarCry and powered by Crytek Engine 2 - apart from being the 2nd engine its also one of the first games to use Direct X 10
As you can see its mighty spiffy with realtime soft shadows and clever ligting etc - not to mention an insane geometry count - every leaf can be shot out if your wondering, when you mve everything reacts around you.
Nearly thee I guess in terms of photorealism.
