Before the title, The Empire Strikes Back, there was a written script, by Leigh Brackett, that had many differences.
According to T-bone’s Star Wars Universe (where we got the link to the PDF)
SOME noticeable differences include:
- Han is never frozen and there are no bounty hunters like Boba Fett
- Lando has a different last name (Kadar) and a lady friend
- Planet names are different or changed around
- Yoda is called “Minch”
- Han is sent on a “mission” to speak to his powerful Step-father (which is supposed to be part of the next film)
and the biggest one of all…
- Darth Vader and Luke’s Father are TWO DIFFERENT characters
Have fun reading this draft (LINK).
-Star Wars Everything
Read Source: The Empire Strikes Back – First Draft by Leigh Brackett – T-bone’s Star Wars Universe