Pete Lau, the chief executive officer (CEO) at OnePlus, has confirmed that a new phone with an imminent release will have a 90Hz screen. The use of the eptithet "affordable" also connected to this phone suggests that this device is the 7T rather than the 7T Pro. This, then, may not go down well with those who already own the 7 Pro.
https://www.notebookcheck.net/The-OnePlus-7T-s-90Hz-screen-is-all-but-confirmed-but-this-may-not-be-good-news-for-all.434545.0.html