I think the GTX 280 prices will fall and thats it, maybe a 10 dollar dip into the rest of the line but thats about it.
The problem with this is that it only hits the Extreme Gamer market. ATi still owns all of the low to enthusiast market for the most part (performance wise). Nvidia doesnt even have a low or mid end line with the GTX 2xx architecture yet.
Also im dissapointed that Nvidia hasnt moved along to GDDR5 or even GDDR4 yet! Even with the seriously expensive 448 bit wide bus the throughoput on paper still favors ATI's 256 bit bus simply because they are using GDDR5 (which is, in reality, Quad Data Rate). Not does the narrower bus make it much cheaper for ATI to make the GPU, it also makes it wider than Nvidia's bus's, a win win for ATA, and a loose loose for Nvidia.
I <3 you Nvidia