I’m almost certainly going to be long dead before this question becomes important (thanks Berne Convention), but I wanted to ask anyway. You have the original unaltered trilogy, copyrighted 1977/1980/1983. Then you have the 1997 Special Editions, which I believe are copyrighted for the same year, given the mention in the closing credits.

What about the 2004 revision? Or the 2011 revision? Or the 2019 revision? The closing credits for the original trilogy have never been altered since the 1997 release. When the 1997 SE eventually enters the public domain in the 2100s, will the newer revisions immediately be placed in the public domain alongside them, or have they been copyrighted for their respective dates? And what about foreign dubs?