In the early years of iPhone launches, long lines would form at Apple Stores around the world, but those queues gradually became a thing of the past amid the rise of online pre-orders. At least, until the iPhone Duo launched today.

Apple Domain NORTHSIDE in Austin, Texas today

iPhone Duo fever is real today, with queues having formed at many Apple Stores around the world, based on comments and photos shared on the MacRumors Forums and social media platforms. Anywhere from dozens to hundreds of people lined up at the stores on Friday morning or even a day or two earlier for a chance to buy the iPhone Duo.

Apple's CEO John Ternus and retail chief Deirdre O'Brien visited Apple Domain NORTHSIDE in Austin, Texas, likely because F1's U.S. Grand Prix is taking place there this weekend and Apple TV is the exclusive U.S.…