R700 is ATI's multi-chip, but at this time it looks that there won’t be four or six cores on the same die. Our sources have confirmed that we can hope for two cores on the same die.
Anything more than that would be too big for the current generation. We learned that R700 is a 45nm chip, but you cannot do miracles with this process.
The future of both R680 and R700 heavily depend on the new CrossfireX driver and we have some high expectations from this one.
We will try to get more on R700 in the upcoming weeks.