It's good to see certain forum regulars back to their old posting ways. Haven't we been over how small the $499+ market is for video cards? Calling (even a good card, like the 580) a 'huge win' for Nvidia is a gross misrepresentation of the direct impact the 580 will have on Nvidia's sales figures.
I think Nvidia released the 580 before the other parts to secure the image that the GF110 is more quiet and uses less power in addition to being faster than GF100 (and 104?). The Anandtech reviewer, Ryan, wrote that Nvidia will release the rest of the 5XX series reasonably soon. As a product line-up the 5XX could fare quite well, and AMD's timing on releasing their 69XX series will be crucial in this holiday season's competition.
I don't know why people act as if (ref: "game, set and match" type posts) there's some huge win here. Nvidia promised that their next iteration would be quieter, less power hungry and perform faster. Check the marketing display at PDX LAN. If Nvidia hadn't delivered on that promise the 580 would be a failure. But that Nvidia delivered doesn't mean that we are heralding in the be all and end all of gaming, yeesh. They did what they said they would do (and really, what they were supposed to do given the customer feedback re: noise, heat).
Having said all that, I'm interested in seeing the 6970 versus 580. I think that they will be roughly similar in performance at stock levels, and the 580 (in the 2 reviews I've seen) hasn't overclocked well, so that'll be something else to check out. Personally, I'm not a big fan of multi gpu configurations myself, but it'd be nice to see a single card competitor from Nvidia for the 6990.