Early data points suggest Apple may be entering one of its healthier iPhone cycles in years -- even before the brand-new iPhone Air has proven itself.Apple (AAPL 1.06%) just refreshed its flagship product line, and the first read-through from preorder week is encouraging. Apple analyst Ming-Chi Kuo said on Monday that preorder trends for new iPhones indicate stronger initial demand for the iPhone 17 family versus last year, while also flagging uncertainty around the just-announced iPhone Air, Apple's ultra- ...