The Plex app on Xbox One now lets you watch live TV. But recording is a different matter entirely.
Plex DVR arrived before the service allowed you to actually watch shows live from your OTA TV tuner such as a HDHomeRun Connect. In most cases, the apps on the various platforms Plex supports have been updated to now add live TV and DVR features.
The Xbox One only has live TV at this point. So you can't use the DVR on the Xbox One, but if you were hoping Plex would be your solution, you can still use it with your Xbox One.
Full story from the WindowsCentral blog...