Unreal 2 Info
The story unfolds through the briefings, cut scenes, in-game dialog with NPCs (mainly your crew), and the action contained in the missions themselves. One of the important goals with Unreal II is to create a game that has fast paced, high intensity combat and yet tells a real story - with interesting characters, according to Infogrames.
If you read on they dont really give away stuff that sounds really revolutionary. Of course if I was legend with a game still a ways from release I wouldnt be giving away any big secrets just yet.