But how does anyone one know if they are "good enough" already? Just because Apple published some of it? Or the claim came from actually developing appls that make use of it? I don't think somebody gained the experience within few hours of Apple's event.
You don't. That's why he said "might". Since it's not even out yet, I doubt anyone is buying a device based on the announcement today. We'll find out at some point after they release it and the reviews come in.