Nikkei Asian Review claims Apple is planning to release three iPhone models next year, including a premium device that will feature a curved display. A source familiar with Apple’s plans said, “There will be a 4.7-inch model, another that will be 5.5-inches and a premium handset that will be either 5.5-inches or larger equipped with a screen bent on the two sides,” noting the first two phones will feature the flat screen found on…