Well, I already bought it since they were selling it for cheap. I don't have a lot of money to invest in SFB, F&E, and related games and materials, and I'm only planning on playing with a few friends for fun, not any super serious gaming. I think this complements my even more out-of-date SFB Designer's Edition quite nicely.
I was just curious about how much has changed and, more specifically, what has been changed between the 1986 edition and the current edition.
They also had a very old Prime Directive core rulebook. I'm not even going to guess how out-of-date that one is.