According to reports, OnePlus will launch the OnePlus 9, OnePlus 9R, OnePlus 9 Pro and the OnePlus Watch later this month. Apparently, it has been confirmed that the hardware event will not occur until late March, but OnePlus will make some sort of announcement on March 8. OnePlus has hinted at its upcoming Hasselblad partnership, too.
https://www.notebookcheck.net/The-OnePlus-9-OnePlus-9R-OnePlus-9-Pro-and-OnePlus-Watch-are-all-tipped-to-launch-this-month-as-OnePlus-hints-at-Hasselblad-partnership-in-its-first-official-teaser.525677.0.html