Unique Loot in chest
5 Trial Spawners - 4 new aggresive mobs in them.
Essential Locator and Totem Template can only be found here.
Crashed End Beacon
Has hidden chest and Book Guide about beacon creating
End Stone Spike with hidden ore
(image)
Random ore island
Fully Random Island: random spawn, random shape, random holes, random flying mini islands around, random ore spawn, very rare in end, and nearly impossible to meet near End Cities.