Apple might release 3 new iPhone models in 2015

Apple has introduced two new iPhones each for the last two years: the iPhone 5S and 5C in 2013, and the iPhone 6 and 6 Plus in 2014. But the company might oneup itself in 2015 with yet another model to be released alongside the iPhone 6 and iPhone 6 Plus successors.

Cowen and Company analyst Timothy Arcuri claims Apple has been working on a new 4-inch iPhone model that might release in 2015, Apple Insider reports.

Citing "sources" within Apple's supply chain, it says the new model will be similar to last year's iPhone 5S, but might have a new design with the edges of the screen slightly curved, and a more powerful processor - likely the A9 chip, which will reportedly be produced by Samsung this year.

It also claims this four-inch iPhone would occupy the "low-end" of Apple's smartphone line-up, built with "low cost components" to keep the price down. If these claims are true — and the rumours of the alleged 12.9-inch iPad are also true — Apple might be able to sell its iPhone and iPad lines in "small, medium, and large" by this time next year. It would make a lot of sense for Apple to sell a new version, considering the company marketed the iPhone 5 and iPhone 5S as "perfect" for your hand, and there are still plenty of people that don't want bigger phones.

The note also mentions Apple's rumoured 12.9-inch iPad, which it says will launch in the spring to "reinvigorate" the category, saying the giant tablet will initially ship between 15 and 20 million units.