The following is from Time Magazine, May (30?), 1983, the article
"I've got to get my Life Back!"  The title refers to George Lucas'
desire to put Star Wars aside for awhile.
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 "The films that record what went on in the beginning-if they are ever
made- will be altogether different in look and tone from the existing 
trilogy, says Lucas.  They will be more melodramatic, showing the
political intrigue and machiavellian plotting that led to the downfall
of the once noble Republic.  They will have only enough outward action
to keep the plot moving.  Obi-Wan Kenobi, the elderly Jedi played by 
Alec Guiness in the Star Wars series, and Darth Vader will be seen as 
younger men, while Luke Skywalker will make a brief appearance as a
baby in Episode III.
  The sequels, the 3 movies that would follow Jedi are considerably
vaguer.  Their main theme will be the necessity for moral choices and 
the wisdom needed to distinguish right from wrong.  There was never 
any doubt in the films already made: in those the lines were sharply 
drawn, comic book style.  Luke, who will then be the age of Obi-Wan
Kenobi is now, some place in his 60s, will reappear, and so will his 
friends, assuming the creator decides to carry the epic further.
Hamill and the others will get first crack at the roles- if they look 
old enough."
  Also in the article is the mention that the slavery of the Wookie
race by the Imperials would be featured in the first three films.
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