Interesting, I could have sworn someone from id dropped a big hint at QuakeCon along the lines of "we don't like to take a game to E3 two years in a row".

This was more of a joke that had the audience laughing, basically aimed at Daikatana and Duke Nukem (taking) Forever. There was no specific talk that Doom 3 would come out before next May, or even a minor hinting. When it's done is the mantra, and right now the engine is done (and has been for months beyond tweaks), and now it's just up to the artists and such to crank out the content.

And yes, on the video card arena, a sub $100 GeForce 4 MX is not going to show much improvement over a GeForce 2 GTS. They are actually the same basic card. (Engineering redid the core to be a bit cheaper to make and Marketing slapped the 4 on the name). The GeForce 4 Ti on the otherhand would be a decent step up from the 2 GTS.