And there was this gem…
https://makingstarwars.tumblr.com/post/42857438667/1980s-fantastic-films-collectors-edition-20
Wow , just read that article and while it got a lot wrong , it did predict the episode 1 plot of Darth Vader starting out as a slave boy , and the pain inducing collar is not too unlike the chip that blows you up if you try to escape . Interesting that they knew the name Anakin Skywalker at this time . Where did that name first appear ?
That’s a good question, as I never heard it before ROTJ came out. Maybe Lucas dropped it in an interview at some point?
Star Wars Poster Monthly also went off on a lot of crazy speculative tangents, and that was an officially licensed publication! The only one I recall off the top of my head was one about the OT troopers being clones and how they were trained. Not sure if they were getting notes from Lucasfilm or making stuff up.
There are only three issues online that I know of.
http://www.theforce.net/timetales/misc/arcana/arcana.asp