Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
I was wondering the same exact thing. To me, it seemed like a lot of manufacturers had invested in the iPhone 5 design. But now with the iPhone 4S, I bet they're devastated to learn that their cases won't sell.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.