Minecraft wiki entry for Ender_Update, associated text: The End dimension.
Includes everything as of the Combat Update for the Java Edition, except for banners on end city walls and shields.
4 new mobs:
Ender dragon, shulker, endermite, and polar bear
14 new blocks:
Ender chest, dragon head, chorus flower, chorus plant, end gateway block, end portal (block), end rod, end stone brick, stained glass, stained glass panes, purpur block pillar, slab and stairs.
8 new items:
Dragon's breath, chorus fruit, popped chorus fruit, end crystal, shulker shell, eye of ender, and lingering potion, ender pearl.
Igloos.
7 new achievements (added Xbox Live achievements to Windows 10 Mobile version)
2 new commands: /locate and /connect, although /locate only searches for strongholds.