An investor note from Zacks Equity Research indicates that Apple plans to continue selling a 4-inch iPhone through 2015 to maintain, or even grow its slice of the pie in a market saturated with options in screen sizes.

It will be a low-priced version of the iPhone 6, not a smaller iPhone 6S as some have suggested, according to Zacks. The investment bank projects 10 million units sold throughout the year.

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“While iPhone 6 and 6 Plus sales are touching new highs, a section of iPhone users still prefer smaller iPhones. We believe that with more variety in iPhone 6 sizes, Apple would be able to target a vast user base of those willing to upgrade to the iPhone 6 [...] We believe that the launch will cash in on the market buzz created by strong sales of the new iPhones.”

If the forecast holds true, Apple will not have changed much of the existing business model. The company currently sells two different versions of the newest model, and two older models, for a total of four pricing options across three different screen sizes.

The older models are the iPhone 5s and iPhone 5c, the latter being a repackaged iPhone 5. These low-spec models don’t sell nearly as many units as the newer ones, but they fill a gap that would otherwise allow competitors to penetrate the market in areas where Apple wants to be present.

A smaller form factor boasting the design of the iPhone 6 and carrying a lower price point will undoubtedly attract customers in emerging markets, if only for the short term.