Why iOS 7 Is Apple's Most Important New Product in YearsBrian Barrett9/17/13 3:01pmFiled to: ios 7appleiosiphonesmartphonesmobile3EditPromoteShare to KinjaToggle Conversation toolsGo to permalink Tomorrow, millions of current iPhone and iPad owners will be prompted to update iOS with a tap. Friday, millions more new iPhone buyers will start receiving their already updated rainbow pastel plastic iPhones in the mail. In those two days, the world will be introduced to iOS 7. And how it responds is more crucial to Apple's future than any phone could ever be. Advertisement Before the new iPhones were announced last week, we took a look at just how important iOS 7 was to Apple's future. It's worth revisiting, below, on the eve of its debut.