Other than the dev, probably not.
As of right now, Plasma Bigscreen isn't available for public use yet. This is due to not being developed for so long. The project has been revived, but it might take a while until it becomes stable and is available for public use. You can check the status of Plasma Bigscreen on the Matrix channel or the KDE Invent repository.
https://plasma-bigscreen.org/
But I want to know, when it is available, what TVs will it run on, what will the install/upgrade process look like, etc.