-2 New Allied Races: Mechagnomes (Alliance) and Vulpera (Horde). Also with new Heritage armor
-Worgen and Goblin heritage armor
-A little more of player customization -New pets, mounts(like alpaca one for f2ps), toys, transmogs, and secrets -Class buffs and nerfs -> https://www.wowhead.com/guide=9252/consolidated-class-and-essence-changes-for-patch-8-3-visions-of-nzoth
-New Darkmoon Faire Arcade (Mechafun)
-Legendary Transmogrification now available. For 20s -> sulfuras/atiesh/thunderfury
-Auction House updates: but sterter editions can't even look at it now
Just info: New raid [Ny'alotha] / New Mage Tower [Horrific Visions] / New phases in Uldum and Vale of Eternal Blossoms / Blackrock Depths Battle Pet dungeon / Pandaren and Allied Race Death Knights