According to observations posted by a Redditor, the OnePlus and McLaren brand partnership is no more. Therefore, it seems we are not getting a flagship variant with a distinctive black-and-orange finish this year. However, the OEM has yet to publicly announce this news itself.
https://www.notebookcheck.net/The-OnePlus-7T-Pro-McLaren-Edition-may-be-the-last-of-its-line.466101.0.html