Not all iOS 6 features are supported across every iOS device on Apple's compatibility list and that has been ticking some people off. Sometimes limited support stems from steep hardware requirements, but (too) often Apple is being accused of intentionally obsoleting older devices by going to great lengths to ensure certain software features are kept exclusive to the latest hardware (Siri, anyone?).
Luckily, with yesterday's release of iOS 6 Beta 3 to registered developers, Cupertino added two features that previously were not supported on the iPhone 3GS, VIP Mail recipients and Shared Photo Streams...