A certification for what may be 2019 iPhones has allegedly surfaced on the Eurasian Economic Commissions's database. The submission details a total of 11 different model numbers apparently associated with the Apple brand. They may represent different SKUs of the XR, XS and XS Max's successors.
https://www.notebookcheck.net/New-iPhones-may-have-made-it-through-their-first-certification.421425.0.html