The possible exitstence of a 2nd-generation iPhone XR is relatively well-supported in the Apple rumor sphere. Most lately, a blog claims to have gotten hold of images showing what could be this phone with and without clear cases. As it has more than 1 rear camera in these pictures, it could just be a real 2019 phone.
https://www.notebookcheck.net/Apple-iPhone-XR-2019-case-leaks-may-give-further-insight-into-how-cameras-and-buttons-will-look-on-this-phone.422887.0.html
Inexplicable. Steve would be fuming in heaven.