According to sources in the Taiwan-based iPhone supply chain, Apple is preparing the parts and components to manufacture up to 80 million iPhone 6 and iPhone 6 Plus devices before the end of 2014.
Barring unexpected component shortages or low yield rates (thought to have been responsible for Apple abandoning its use of sapphire for the iPhone 6-series devices), sources estimated that shipments of the iPhone 6 family will reach 10 million units by the end of September, with the remaining units shipping over the subsequent three months.