Apple readying 4.7-inch iPhone with A13 chip for March 2020
New rumors from the supply chain claim Apple is preparing a new iPhone with a 4.7-inch screen, A13 chipset and 128GB of storage for release in March 2020. Rumors say this iPhone will cost around $650.
Given its display size this will likely be a reshelled iPhone 8 and given its purported March release, it's likely the successor to the iPhone SE.
Apple will release three iPhones in 2019 - updated iPhone XI and XI Max with OLED screens and triple cameras (ultra-wide, regular and tele) and an iPhone XR successor, which will likely retain the LCD and gain dual camera (regular + either ultra-wide or tele).
If this recent report proves true then Apple will release the iPhone 8/SE successor in March, similarly to what it did in 2016 - where the iPhone SE joined the iPhone 6s and 6s Plus that where launched in 2015.