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.