New reports further strengthens our belief that Cupertino company Apple is indeed working on iPhones with large screen sizes. According to the latest reports by WSJand Bloomberg, Apple is working on a 4.9-inch successor to the iPhone 5S, to be called the iPhone 6 (that's our best guess, yeah).
C Technology, a Chinese technology news publication, having made a name for themselves with accurate reports in the past, talk about an iPhone 5C successor with a larger display. No exact size is being mentioned, although we reckon Apple to keep it below 4.9-inch.
Unfortunately, these are just reports and no real confirmation can be had for at least another 6-7 months. Until then, enjoy them in your fantasies.