WarcraftPets Forum

There is a Gnomeregan Pet Battle Dungeon being added in the next update. Intended to be up on PTR by end of the week.

no further details given.

Gnomeregan
Automated Defenses - The automated defenses of Gnomeregan have been activated!
Out of Control Elementals - Defeat the Living Elementals.
Pull the Correct Levers - Use the correct sequence of levers to activate the Door Control Console.
Bypass the Mine Field - Ride the Bomb Stomper 5000 through the deadly field of Bomb Bots.
Resilient Critters - Defeat the critters that somehow survive in this place.
You Dirty Rat - There's a Leper Rat of unusual size guardng that door. It looks mean.
Gnomeregan Defense Force, Activate! - Defeat the Gnomeregan Defense Force.
Shadowy Figure - Someone has telepoted into the room. Confront them!
Thermaplugg's Latest Invention - Mekgineer Thermaplugg has left his latest invention here as the last bastion of defense for Gnomeregan. Smash it!

Not much more info yet, but these are the scenario stages via datamining of the new patch. About what you'd expect, but with a Gnomeregan flare! (Interested to see the "Bomb Stomper 5000" stage)

To add, there were a number of pets added in the build as well. Most seem to be the pets you fight in the dungeon, though it's possible some will be rewards. Most do not have items yet, which they won't if they are just NPCs.

Leper Rat
Cockroach
Automated Spider Tank
Autonomous Omni Chopper
Automated Drilling Machine
Prototype Annoy-O-Tron
Gnomeregan Guard Wolf
Gnomeregan Guard Tiger
Gnomeregan Guard Mechanostrider
Bloated Leper Rat <L.R.O.U.S.> [presumably Leper Rat Of Unusual Size]
Gnomish Rocket Chicken
Ultra Safe Napalm Carrier
Sludge Disposal Unit
Freeze Ray Robot Prototype
Accelerated Defrosting Unit
Living Permafrost
Living Sludge
Living Napalm
Pulverizer Bot Mk 6001 <Mekgineer Thermaplugg's Latest Invention>

There is also a Redridge Tarantula, but it has an item so it's a learnable pet, probably unrelated to Gnomer.

I would assume the Automated Spider Tank, Autonomous Omni Chopper and Automated Drilling Machine comprise stage 1. The Living Permafrost, Living Sludge and Living Napalm are stage 2 (though their related mechanical counterparts are likely involved somehow: Ultra Safe Napalm Carrier, Sludge Disposal Unit and Freeze Ray Robot Prototype/Accelerated Defrosting Unit). The Leper Rat/Cockroach are probably part of stage 5. Possibly also the gnomish rocket chicken. Stage 7 sounds like the 3 Gnomeregan Guard pets (Wolf/Tiger/Mechanostrider). The Pulverizer is obviously the boss.

Additional edit: I forgot the LROUS, but it's specifically called out in the scenario so that one's also obvious.

Redridge Tarantula makes me think another level 25 trainer may be added to RR Mountains. Here's hopin'