One thing I found curious (and this is going off my fuzzy memory of watching it after downloading it from google video a full decade ago, so I could be remembering wrong) is that IIRC the copyright © at the end of the end credits was 20th Century Fox, not Lucasfilm.
The newspaper comic strips were also copyright Fox IIRC.
Now that Disney’s buying Fox, there’s presumably nothing keeping them from throwing it in on future releases.
Edited to add:
And I now see I talked about this very subject in this very thread almost two years ago.