In one of the stickied threads at the top of the forum…
There are no set dungeons for the newest set armours, i.e.
| Class | No Set Dungeon | Has Set Dungeon |
|---|---|---|
| Barbarian | Horde of the Ninety Savages | Immortal King, Might, Raekor, Wastes |
| Crusader | Aegis of Valor | Akkhan, Invoker, Roland, Seeker |
| Demon Hunter | Gears of Dreadlands | Marauder, Natalya, Shadow, Unhallowed Essence |
| Monk | Patterns of Justice | Inna, Raiment, Sunwuko, Uliana |
| Witch Doctor | Mundunugu’s Regalia | Arachyr, Jade, Helltooth, Zunimassa |
| Wizard | Typhon’s Veil | Delsere’s, Firebird, Tal Rasha, Vyr |
| Necromancer | Masquerade of the Burning Carnival | Inarius, Pestilence, Rathma, Trag’oul |
It is not a bug that the new sets do not have dungeons associated with them. When the first of these new sets were released it was queried whether new set dungeons would be created for them. Blizzard confirmed that not only were there no new dungeons, but that they had no intention of creating any.