Here's my thought: DOOM3 is on schedule. When has id ever been late on a game? Never. And based on interviews I've read, id is damn serious about getting this thing out the door in 2003. Also, they're having a playable version of the multiplayer at QuakeCon this year, which means they wouldn't be taking the extra time to add more multiplayer features. Also, this means that id is comfortable with letting people outside the company play with their code, which is something they don't do if it is in a questionable state. Granted, the Quake 3 test had some bugs, but this is a public event, not a hardcore beta test.
Another thing to think about is that this announcement was made by Activision, not id. id may be wary of giving anyone any information after the stunt that ATI pulled, so Activision may be in the dark on this. While Activision may be in charge of most of its games schedules, I'm pretty sure id does what they want, even if it includes keeping their publisher in the dark. That's why Activision doesn't know anything about it.
In the words of the Dude, new shit has come to light. id hasn't made any statements or posted any comments on Slashdot or anywhere else. They would've awknowledged something if they gave a rats behind, but they're so busy that they don't wanna trouble themselves with this kind of retardedness. They're just going to let Activision do their own thing, and then make a big announcement like Valve did.
That's my new theory.
Also, old geezer, if you had seen the benchmarks made by several hardware review sites when testing the 9800 pro on a test build of DOOM3, you'd see that it gets over 60fps on 1024x768 at high detail. This means the game WILL run fine on your current card. So don't sweat yourself, missy.