When Apple unveiled iOS 6 and released the first beta at WWDC back in June, it quickly became apparent that a number of new features wouldn’t be supported on older devices like the iPhone 3GS, and Apple mentioned these restrictions in the fine print of its iOS 6 preview page.
In the iOS 6 beta 3 release, however, shared Photo Streams and VIP mail — two of the features that are unsupported on older devices — are now supported on the iPhone 3GS.