Minecraft wiki entry for Better_Together_Update, associated text: Blocks
Banner
Coarse Dirt
Jukebox
Stained Glass
Structure Block
Items
Music Disc
Armor Stand
Book and Quill and Written Book
Firework Rocket
Firework Star
Mobs
Parrot
Generated structures
Ravines
Other
Ability to include a starting map and/or bonus chest when creating a world
Splitscreen
Choice of outline instead of highlight for block selection
Brewing Stand must be fueled with Blaze Powder
Added Recipe Book
Ability to change player skin while playing a world
Player permissions
No Quasi-connectivity (old-BUD switches)