Lending credence to previous rumors and speculation, sources have told Bloomberg that Apple is working on a “major redesign” of the iPhone for 2017 that will remove the Home button and focus “more heavily on the display.” Back in May, Daring Fireball’s John Gruber revealed “scuttlebutt” that the 2017 iPhone would feature an “all-new form factor” getting rid of the top and bottom edges and incorporating…