I already had this commented of the news but I say it again here:
Well, I think Nvidia still has a large number of users that will upgrade to the 7800gtx if a AGP version will be made.
There are millions of agp users, who don't have the latest technology, not for money, but because they don't want to waste time and money to upgrade just to get a non percetible gain in perfomance.
I own a Asus P4C800, P4 3.0 prescott watercooled oc to 4.1 ghz, ati x800xt PE and really, and I'm not in the mood to change board, buy a new cpu, reinstall the OS and all applications when at the moment I'm pleased with the perfomance I have.
If Nvidia makes a AGP version I will think in the possibility of upgrade my video card in a near future (as soon as the prices drop below $400).
If Nvidia and ATI do not make agp versions on the new video cards generation, then in 6 months from now I will think in replace my complete system.
There are people who recently bought boards with socket 939 with agp slot and can now upgrade to AMD 4xxx x2 and will be forced to upgrade the board if they want badly the 7800GTX.
And like any hardware, this video card in a few months will be replaced for a faster version, and prices will drop.