There has been evidence of this new remastered original trilogy slowly building online over recent months. This is due to the restoration company posting short clips to a quiet unknown YouTube account.
Check out this video on an explanation on what has been happening and a comparison between the new remaster and the current 4K discs.
TLDW: The new remaster looks way better than the current discs.
Then check out this 17 minute compilation of remastered original trilogy clips that have appeared online so far.
That’s true. My second most hated change was Luke screaming while falling down the air shaft in Cloud City. It completely ruined the scene.
Apparently they removed it in later revisions.
https://youtu.be/ikNFfTj-aE4