Cupertino

TEN years after Steve Jobs held up the original iPhone to a gushing San Francisco crowd, Apple Inc is planning its most extensive iPhone line-up to date.

Apple is preparing three iPhones for launch as soon as this fall, including upgraded versions of the current two iPhone models and a new top-of-the-line handset with an overhauled look, according to people familiar with the matter. For the redesigned phone, Apple is testing a new type of screen, curved glass and stainless steel materials, and more advanced cameras, the people said.