A relatively unknown leaker has posted an image of a heretofore unseen, notchless phone, portrayed as lined up against a another that could be the OnePlus 6T. This phone exhibits what looks like the OnePlus Launcher, and, like the '6T', is shown in an unwieldy prototype case. However, this new leak also has some odd discrepancies.
https://www.notebookcheck.net/Alleged-OnePlus-7-with-full-screen-display-surfaces-in-arguably-dubious-leak.393986.0.html