They are still very much under copyright. Why do you think Disney bought Lucasfilm for billions? Distribution has nothing to to do with a work’s copyright status (it should, as currently, their are tons of pieces of art and literature that are under copyright with no one distributing them-so called “orphan works”). Lucasfilm has thankfully ignored the existence of edits on here (and the rules stress that you should buy the official blurays), but fan-works still exist at the whims of Disney’s legal department.
I think its odd that they haven’t released them yet. especially when the market is more than primed.