https://www.techradar.com/news/iphone-xi

Update: The iPhone XI could enter trial production very soon in order to prevent launch delays. Plus, we've seen an image possibly showing the display panel, and it's rumored that at least one iPhone XI model might cost less than the iPhone X.

Whether it’s called the iPhone XI, the iPhone X2 or something else altogether, Apple is sure to follow up the iPhone X with a similarly premium model in 2018.