We've already seen the iPhone 3GS drop to under a $100 at Walmart, and Apple has now made that the official price point following the announcement of the iPhone 4. What's more, the 3GS will now only be available in an 8GB version (still not clear if both colors will be available or not), and that of course also means that the iPhone 3G is now officially discontinued.iPhone 3GS drops to $99, 8GB only -- iPhone 3G discontinued originally appeared o
