Plex no longer supported?

Is plex (installed via dietpi-software) no longer receiving updates? I only ask because I haven’t received any in a while yet everything else updates just fine.

http://dev2day.de/pms/dists/jessie/Release



https://www.dev2day.de/typo3/projects/plex-media-server/

Plex wasn’t supported by dietpi-software at the time of this post. The problem was simply I had no idea how to install plex pass versions of plex server.