According to TechCrunch, the AmTav is based on a 7" LCD screen (likely the FFS one mentioned in the rumor in May) with a capacitive touchscreen. It's going to ship with the Amazon Appstore but no sign of the Android Market. There's no camera, and the initial model will be Wifi only, with a 3G model possibly coming later.
The interface that Siegler described is very different from the usual home screen. It has a carousel type layout with spaces for all of Amazon's services: Kindle, music, video. It's called, appropriately enough, the Amazon Kindle. The release date will likely be some time in November, not October (as rumored earlier this week). It's running on a forked version of Android, and it looks like Amaozn are trying to do this with as little contact from Google as possible.
As much fun as I had denying the AmTab, I'm glad to know it's over. I got into this because I like seeing new gadgetry and now there's something really new to look forward to.