plenty of rumors that suggest Apple will launch the iPhone 4s as a budget-friendly option alongside the iPhone 5, and now the device has reportedly been listed in one of AT&Tís internal systems. According to a screenshot published by Engadget, AT&T is gearing up to offer a white iPhone 4s, possibly alongside the existing iPhone 4. The iPhone 5 isnít mentioned at all in the carrierís system. Apple is largely expected to announce the iPhone 5, and perhaps the iPhone 4s, during a press event in October. Retail giant Best Buy is anticipating that the new iPhone will be offered by Sprint, and other rumors have suggested T-Mobile will carry the device as well.