According to the report, Apple is expected to introduce three new iPhone models in 2017. One model will feature the OLED display, while two models will continue to use the TFT-LCD technology. The dual camera introduced on the iPhone 7 Plus will continue to only be offered on the 5.5-inch models, not the 4.7-inch model.
This seems unrealistic. Screen technology is not a differentiator. I also doubt people would want to pay more just for an OLED screen.