The Jedi Prisoner in Taral V is a jedi master who can have a massive impact on the conflict, so maybe he is........Revan? All know that Revan went out to fight the Sith Empire on his own, but we never knew what happened to him, maybe he is imprisioned, and somehow he is still alive [ plz dont come with the ''he is a human he cant live that long...] ?
This is not NDA breaking information, I was wrong. This information can be found in the official Taral V video. I edited out what isn't in the video -Conscript