Uldum - N'Zoth Assault: Pyre of the Amalgamated One Bonus Objective will spawn the Amalgamation of Flesh Rare, which has a chance to drop the Wicked Lurker
The Bonus Objective itself is not a guaranteed spawn during the assault. If you'd like to know if it's spawning for the day, Remte and I post Daily Reports in the Xu-Fu's, Warcraft Pets, & Secret Finder's Discord, and I also post them on my Twitter & on the NA Pet Battle Forum
If you're interested in the other assaults, you can track them in your local time on WoW Game Info here
6. Squirt in the NA Garrison 15 October
Squirt the Wandering Trainer will be in NA Garrisons on 15 October. Our strategies for this leveling event can be found here.
7. Blizzcon Collection Packs: Ysergle
Ysergle is included in both the EPIC PACK ($29.99 USD) & LEGENDARY PACK ($49.99 USD). Nothing I could find indicated when these packs might leave the shop, as the only thing from the packs with a time limit was the discount code for the gear store. If that changes, we'll add it to our weekly news!
8. New pet in the Shop: Lil' Maggz until October 31
What’s more adorable than a Pit Lord? A baby Pit Lord! Take this adorable prince of Outland everywhere you go when you adopt him from the Battle.net Shop for $10 USD—now available for a limited time.
Lil' Maggz leaves the Battle.net Shop indefinitely on October 31 and will arrive in a future rotation of the Trading Post, but no sooner than three months after the pet leaves the Shop.
9. October Trading Post
October brings a new batch of Trading Post items, and among them is a previous store pet: Lil' K.T.!