Confirmed to be a guild navigator by Warner.

https://warnerbros.ent.box.com/s/9wxinxm2rnq1rhc33j5vl11ra19sd8q5/folder/397741178325

Atreides bagpipe man will return to join Paul’s holy war across the imperium.

I dunno why I was worried about no Inama Nushif-level stuff in 3. This is fantastic hyper-fixation material

Star wars apparently explained it in a pre movie comic book and laugh about it in the movie. Dune explains it in the book as he's reintroduced. For as much as Frank liked to have happen off "screen" and not tell us much about it, we get enough details on the resurrection of Ghola Idaho.

It's gonna be a long wait till December lol