Did you check you eligibility on Apple.com yet? You put your AT&T account info in. I checked mine by selecting an iPhone 5 a couple months ago just to see and it says October 25th for partial. AT&T still shows September 2014 for full and nothing for partial. There's no guarantee that the 5S will fall into that slot, but it should since it's the new "new" iPhone. I bought my 5 last October and I'm not on a family plan.
Gold 32gb for me and the GF. The A7, Camera and biometrics will be awesome. They never mentioned 60fps video capture for the camera but they had it as an update at the iOS7 announcement. I hope it will have 30fps and 60fps at 1080p and 120fps at 720p. Can't wait. My S4 will be gathering dust after I receive the new iPhone 5S.
It looked like the sides were grey instead of black. Probably so it won't show scratches as easily. I think it looks better, too. Did they show the back? I didn't notice. I was too mesmerized by the shiny gold.