Enderscape is a total overhaul of the End dimension, featuring new world generation, four new biomes, revamped End Cities, and many other additions that enrich the End- and all that lies beyond.
We’ve put a lot of care into sound design and ambience, so Enderscape features hundreds of unique sounds for biomes, blocks, items, mobs, as well as an expanded soundtrack! Visuals are also important, so we have revamped End lighting, a revamped skybox, and biome-specific fog.
You can check wiki for a detailed overview of implemented features.