From Bungie.net: "This week Bungie released three new screenshots featuring the new maps that we've shared thus far as well as a couple extra shots of the Spartan Laser and the one Campaign glimpse we're giving. In this write-up we'll go into as much as you can see in the screenshots, but with maybe a slightly better perspective than the average bear.
Mind you, all of the screens and level designs you see here are completely subject to change. The models, the spawns, the balance, the geometry, the very nature of time and space. It may not be like this when you get to play the game next year."