Of course Apple has started right away on making fixes to the OS.
Most here should know that the Mac OS X usually doesn't get real stable till around the 10.x.4 area. All OSs (Mac, Windows, Linux) have issues right out the door. So this story should come as no surprise. To those who have 10.6.0, thanks for being our guinea pigs.
They arent starting right away, they have never stopped. They didnt go on vacation after the GM build was set up until the DVD was sold in stores last week. The Betas were coming frequently in the end, and it has been a month now since the last GM build was set so of course you can expect a beta to his the ADC developers soon.
As for the Snow Leopards stability, this idea about the OS only getting "real stable till around the 10.x.4 is nonsense. Snow Leopard is more stable now than Leopard was at a couple point updates in. They beat their dead line and didnt do a massive UI overhaul at nearly the last minute like they did with Leopard.