The Remembrance of Earth's Past trilogy explores some changes to human moral and ethics. Whether they are "advancements" might be a different question.

There's a heavy Christian theme to them, but if you're okay with that, C.S. Lewis's Space Trilogy really dives into ethics and morals. The aliens we meet in the first book have no conflict, an interesting view of death and art and literature, and live in harmony with their planet. They are quite interesting books and give some of the most vivid, most alien characters and settings that I've ever experienced.

I'll second Star Trek The Next Generation as well.