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.
Yeah the dynamic range on all the CGI additions is really off and ruins the dusty atmosphere that the original film had.
We didn’t need all those huge animals in a place where they have to collect moisture to survive either. It was better sparse.