The video card, and really the entire PC market, is far far slower moving than it once was.
I mean really, a GTX 260 is still more than enough for some 95% of the gaming market. In fact, i just ran a bench comparison of the GTX 260 vs the newer albeit lower end 6670 (as you can get a 6670 in a low profile model) - and the 260 wins.
In my estimation the GPU market hasn't moved a whole lot since the days of the 8800. Those cards are still viable for the vast majority of games today - and they were released * 6+ years ago *!!
And really, how many people really can use more than a C2D? That's a 3 year old tech and most people don't even need that.
Looks like tablets and mobile GPUs are where it's at now.