American just gave its largest Boeing jets a major business class makeover. See how the cabin changed.

American overhauled its Boeing 777-300ER cabins. American Airlines American Airlines debuted its new Boeing 777-300ER Flagship business class on Wednesday. The upgraded cabin adds sliding doors, wireless charging, and more storage. The Flagship Suite is already flying on American's Boeing 787s and Airbus A321XLRs. American Airlines' largest Boeing widebody plane just got a major makeover. On Wednesday, the airline unveiled its new Flagship business class suites for its 20-strong Boeing…