In what could be the most credible source of news on the iPhone 5S and iPhone 6 release date rumors, Reuters is reporting that Apple is exploring the possibility of launching bigger phones.

Apple is looking to introduce at least two bigger iPhones next year, according to the Reuters source, one with a 4.7 inch screen, the other with a 5.7 inch screen. Some of the information regarding the two possible phones by Apple came from people who are familiar with the iPhone supply chain in Asia.

According to one person with direct knowledge on the matter, the Cupertino tech giant “constantly change product specifications almost to the final moment, so you’re not really sure whether this is the final prototype.”

The Cupertino tech giant is taking a cue from rival Samsung Electronics and is aiming to launch these new devices by next year, although many speculate that there may be an announcement for a new iPhone come September.

The new apple iOS 7 for the iPhone and iPad will be available for download this fall.

Reuters reports that Apple’s possible changing gears to what is often referred to as “phablets” – chunkier smartphones not quite big enough to qualify as tablets – comes as the long time consumer and investor darling faces pressure to deliver more than one new handset model a year.

Many critics say that the pace of innovation in the company has slowed down since the death of its iconic co-founder Steve Jobs.

The iPhone 5 launched last September was the first to depart from the traditional 3.5-inch screen, which Jobs famously declared as “the perfect size for consumers” and had been used in every iPhone since the device was unveiled in 2007.

The current model has one of the smaller screens among the best selling smartphones in the mobile market, which consumers use for browsing the web and streaming content more than anyone else.

Before the end of the year, many expect that Apple will release two new models, one of which is referred to as the iPhone 5S, with new fingerprint technology and a cheaper version in plastic casing, supply chain sources told Reuters.

Apple aims to dress up the cheaper phone in a range of 5-6 colours to differentiate it from the more expensive model that has traditionally come only in black and white.