At least for public downloads (but it very well might be possible to set up two separate repos - public & plexpass).
If you'd like to be able to install and update your PMS on Linux from the official repo, please click "Like This" -------------->
PS. (in Jeremy Clarkson voice) How hard can it be?
There was a repo at one point. When I first started using Plex, that's where I was getting it. When I reported a problem, I was informed that the repo wasn't the best place to get builds, because it wasn't maintained.
I realize that Jeremy Clarkson reference may have ruined the reputation of the post, still would be nice to have Linux PMS releases in a repo.
Early 2021 clean-up: implemented (public channel repository)