New leaks from Ishan Agarwal and Max Jambor suggest that the OnePlus RT and OnePlus Buds Z2 will be launched in India on December 16. The OnePlus RT is essentially a rebranded version of the OnePlus 9RT launched in China earlier this year.
https://www.notebookcheck.net/OnePlus-RT-and-OnePlus-Buds-Z2-India-launch-date-tipped-by-new-leak.581214.0.html