Apple is looking at introducing at least two bigger iPhones next year - one with a 4.7-inch screen and one with a 5.7-inch screen - said the sources, including those in the supply chain in Asia. They said suppliers have been approached with plans for the larger screens, but noted it is still unclear whether Apple will actually launch its flagship product in the larger sizes.
"They constantly change product specifications almost to the final moment, so you're not really sure whether this is the final prototype," said one person with direct knowledge of the matter.
This year Apple is expected to launch two models, an iPhone 5S with fingerprint technology and a low cost iPhone that features a plastic casing and could come in 5-6 colors. The company has reportedly discussed a price of $99 for that device. Presumably, with a contract.
Reuters also notes that the timing of the low cost iPhone could slip to next year.