OnLeaks and CashKaro have posted a new set of renders that suggest an upgrade to an in-display camera in the OnePlus 7's successor. The 2 groups also now assert that this device will support wireless charging. Otherwise, this phone looks much like the OEM's early-2019 flagship.
https://www.notebookcheck.net/OnePlus-will-adopt-punch-hole-screens-and-wireless-charging-in-2020-new-leak.436876.0.html