I don't think you quite understand what I was getting at.
For that rumor to make sense at all there has to be some sort of reason... marketing departments are stupid but there is a limit .
If they do release what we expect to be the 6770 as a 6870 it likely means two things... First is that the performance difference between the top of the line chip and the second chip (Barts and Cayman) is far smaller than we are used to, and the price will be larger. Thus the name difference to previous generations is because the price of the 6770 would otherwise be drastically out of whack with the 5770 at the time of launch.. which generally looks bad to people. We'd end up with a card called the 6870 that costs a good bit less than the 5870 did at launch but that performs a touch slower.
Who knows though, just rumors atm.
if they hadn't trashed the xx30 brand so much with 5830 then they could have rebadged barts xt as 6830 instead of 6870. as it is they might have to put the xx30 moniker in storage for a few gens...kind of like they ditched "xt" after the 2900 series.
I agree with lopri, the 2 things most likely to not change in the leadup to launch are barts xt = 2/3 cayman xt and it looks highly likely that we're going from 4+1 to 2+2. everything else, card names, performance, die size, yields, and jhh wood screw jokes are all likely to move around quite a bit.
Good call.
Price depends on how low NV is willing to go with their gtx460 (a much bigger GPU). I have a feeling that NV knows its not going to win, so its pricing it low to put downward pressure on the 6770 when it comes out. Basically they are saying "you may beat us, but you're not going to make a lot of profit doing it".
amd was able to strongly influence the market in the 48x0 vs gtx 2x0 launch days b/c they had a very strong 1-2 of 4870/50, then brought out 4870x2, 4830, 4770 later on, etc. they had a strong lineup from top to bottom. I don't think that nvidia will have too much success trying to control the market with a gtx 460 1gb & 768 mb + some duct tape, balls of string, and pocket lint. they could have some influence on the mid range certainly, but that's it until they come out with something at least competitive with amd's high end.