GameSpy has wrote another 2 page preview of Doom III. In it you can find two new screenshots of this game.
We also got to see how the new engine will be used for a bit of puzzle-solving, in what Willits referred to as "the crane game." In this area, we needed to pick up some barrels to vent a nearby room, using a hand-operated crane system similar to the vending machines at your local Denny's where you'd try to grab stuffed animals. We've seen puzzles like this in similar games, but it feels different this time around -- the crane swings back and forth on its chain, and feels more like a challenging mini-game than just pulling a number of levers.