Apple is expected to release 4.7-inch and 5.5-inch iPhone 8 models in 2017. According to sources familiar with the company, the Cupertino-based tech giant will unveil two and only two premium flagship iPhone models with a 4.7-inch and 5.5-inch display.

The latest information pertaining to iPhone 8 include a glass sandwich chassis incorporating an AMOLED display. However, the company is currently exploring the design aspects of the upcoming phone.

The initial structural tests look promising based on early prototypes. However, the Tim Cook-owned company is exploring backup possibilities in parallel with the initial development.

Earlier, there were rumors about the possible integration of a glass design. This is because Apple will celebrate the 10th anniversary of iPhone and the company has reserved few features to 2017 instead of including them in the recently released iPhone 7 and iPhone 7 Plus.

According to industry analysts, the possibility of aluminium design looks bright and will be an ideal choice. They argue that the chances of a glass design are very bleak due to huge production costs.

A previously released report from Nikkei revealed that Apple is gearing up to release three iPhone models for the 10th anniversary celebrations. Analysts quoting few supply chain sources disclosed that the company is working on a 4.7-inch, 5-inch, and 5.5-inch models.

Responding to media on the sidelines of an earnings conference call, Apple CEO Tim Cook said that demand for the latest generation phablet is far outstripping supply. Cook is confident that iPhone 7 sales will break even but he declined to respond to a query about iPhone 7 Plus.

The main argument is about the introduction of a 5-inch model since it will serve as a mid-range for both 5 and 5.5-inch. The latest technological reports indicate the fact that users are slowly moving away from under 5-inch smartphones.

Even though the 4.7-inch variant looks like a sweet spot for Apple, the big 5.5-inch model is also gaining ground. This is because of the integration of a dual-camera paired with OIS.