Key TakeawaysApple's newest iPhones are available for pre-order starting Friday, and analysts are awaiting early data to determine how consumers feel about the newest smartphones.Analysts have cited "attractive" trade-in deals from cellular carriers as a factor that could drive early sales for the iPhone 16.However, the wait until at least next month to get access to the AI features that dominated Monday's launch event could cool some consumers' enthusiasm. Pre-orders of Apple's (AAPL) latest iPhone, the iP ...