I just got an email from Delta showing their new look on aircraft that will debut later this year. They are starting with the Boeing 757 and a new wide body Airbus A350 will debut in early 2025, followed by ongoing changes to additional aircraft. I will say that it does look very nice—much more sophisticated than before. It just might be the push I need to spring for Delta One. :-)
Here is the page from their website for those who are interested that shows images: https://news.delta.com/delta-unveils-new-cabin-interior-across-its-fleet