It looks like Amazon is messing with a new interface design. It does not show up for all visitors, so I am not among the ones to see it, but my brother is. Check out the screenshot. Also, here’s a really nice article about Amazon’s tab bar and its’ evolution in time. The new design does not look awfully different from the previous one, but it has more main categories tucked on the left side and seems to emphasize “me”-related features on the top bar, across the page. Now don’t ALL go there and stress their servers, they’re busy! Or better, let’s see who gets the new interface and who gets the old one!
Cool topic!