From the lineup at TGS i think they are more than ready, the games look mature and seems to give way more real content than usual launch titles..
From the sound on the 1up podcast and other places around the net, sony still has a lot of work to do before the launch. I've seen more reports of many games not looking all that mature (framerate issues) with only a little over two months to go. As always games ready for launch are rushed, and this is no exception.