On the very first Patch 10.1 PTR, loot for the Aberrus Raid includes Very Rare items which includes Class Locked Trinkets!
Class TrinketsThe Class Trinkets drop off the second to last boss, Neltharion, in 3 different types.
Idol of Chaotic Arrogance — Crit Base. Your area effect spells and abilities have a chance to grant you 3,524 Primary stat for 12 sec. During this time damage you receive is increased by 5%. Classes: Warrior, Paladin, Mage, DH, Evoker Idol of Debilitating Arrogance — Vers Base. Your harmful debuffs, periodic spells, and abilities have a chance to grant you 3,524 Primary stat for 12 sec. During this time you Bleed for 62,571 Nature damage over 12 sec.Classes: Rogue, Priest, DK, Druid Idol of Domineering Arrogance — Haste Base. Your summons' attacks have a chance to grant you 5,776 Primary stat for 12 sec. During this time you are slowed by 10%.Classes: Hunter, Shaman, Warlock Monk Other Very Rare ItemsHere are some other Very Rare items in the raid. With how few there are, wouldn't be surprised to see more added throughout development.
Seething Black Dragonsccale (Trinket) — Kazzara, Boss 1 Your attacks and abilities have a chance to grant you ephemeral dragon wings, increasing your Ciritcla Strike by 1,037 and your Leech by 293 for 15 sec. Use Call upon an echo of Neltharion's power to crash to the gorudn below you, dealing 24,477 Shadowflame damage ot nearby enemies if you have traveled at least 15 yards. (3 Min Cooldown). Placeholder Name (2H Agi Staff) — Rashok, Boss 5 Voice of the Silent Star (Cloak) — Scalecommander Sarkareth, Boss 9 Read more on wowhead.com