It sounds like Jenna might be making a cameo in S20.
From a wrestling-site interview:

Marc: That's great to hear!! :) Do you ever plan to return to anything like Survivor or would you even like to appear on your own reality TV show like other stars have such as Brooke Hogan and Peter Andre/Jordan in the UK?

Jenna: I'm working on my own reality show at this time, BUT I did get to be involved with an upcoming season of Survivor. But I can't say how yet…

Trisha: Any little spoilers you wanna share? ;)

Jenna: Well the reality show would focus on Ethan and I…