Check out this article on computerandvideogames.com for some more various info on Doom 3 in an interview with id CEO Todd Hollenshead:
The official release date is: "When it's done." We're not actually working towards any specific date, we just want to get towards the experience we're aiming for, then we'll worry about dates once we've done that.
We do not anticipate that we're going to be done this year, but we're working to get the game finished as soon as we can. As soon as we know the release date, trust us, we'll let you know...
There's also two new screenshots which you may have seen recently in an issue of PC Gamer (or maybe you just saw scans of them online) of the Revenant and a bunch of Trites (that's the name of those head-spider thingies right?). I've mirrored them in DW's own Doom 3 screenshots section as well. Thanks Shacknews.