"One more thing." With that phrase, Apple paid homage to its late co-founder Steve Jobs for the 10-year anniversary of the iPhone on Tuesday when it unveiled its latest - and, at $999, its most expensive - new version of the device, the iPhone X. CEO Tim Cook called it "the biggest leap forward" since the first iPhone. ("X" is pronounced like the number 10, not the letter X.) It loses the home button, which revolutionized smartphones when it launched; of...