New cases for an "iPhone 4S"-style device are showing up at AT&T corporate stores around the US, says BGR. The site has obtained photos of Speck and Otterbox cases which appear similar to existing ones for the iPhone 4, but with the critical difference of larger holes where an iPhone's camera and flash would normally be situated. Given the timing of the accessories and a single consistent change, it's believed that Apple may indeed be producing a modestly upgraded version of the iPhone 4.
