Do not get your hopes up.
There is reasonable doubt out there that the 680 was originally designed as a 680. If they were going for the "next 8800GT", they would have priced this lower. They are extracting value just like AMD.
Based on leaked specs, I do not think the GK106 will not dominate the 7850, though nVidia could certainly choose to price it much lower. I don't think it will have the same margin vs. the 7850 that 680 has vs. the 7970, but if it did, then it would still not be comparable to the margin of victory the 8800GT had at the time. Any "next 8800GT" talk is just sensationalism. It can potentially have a favorable price, but it won't have the margin of victory an 8800GT had unless they price the cut down GK104 below $300, and I find that pretty unlikely.
If nVidia wanted a "next 8800GT", then they would have priced the GTX680 much lower. Not going to happen with the outlook that 28nm will continue to be supply constrained for a while.
I can see the GTX680 SE being below $300.