What’s the iPhone’s future? Think IBM’s Selectric: opinion

An Apple iPhone 6 is seen on display at the Apple store on 5th Avenue in the Manhattan borough of New York City, July 21, 2015. REUTERS/Mike Segar

For the iPhone's 10th anniversary, Apple Inc is planning to release new and upgraded models later this year, with updated designs, improved cameras and better screens. 

But a more important product launch actually began in mid-March, when the company quietly reintroduced the discontinued, two-and-a-half-year-old iPhone 6 in several Asian countries and Eastern Europe.