A recent 6.1 PTR patch was released and there's a new pet that's tied to the game Heroes of the Storm. [source]
Be a Hero, Earn a Pet
The previously datamined pet "My Special Pet" has finally been updated in the latest PTR build. Its new name is Graves and it will come from a Heroes of the Storm promotion.
There's currently no information on what the promotion will entail. It's possible that it could be similar to the Hearthstone achievement, where players must win a set number of games before earning the reward.
Heroes of the Storm is a game developed by Blizzard that is currently in beta. It will be free-to-play once it is officially released; hopefully acquiring the pet will not require any additional purchases.
We look forward to learning more about Graves and how players will be able to obtain this pet. Better brush up on our Heroes gameplay, just in case!
Hogs Still Unavailable
There was some confusion over MMO-Champion's datamining of the recent PTR patch, as Hogs suddenly popped up on the radar again.
Hogs was originally implemented as the reward from the 10th anniversary Victory in Hillsbrad achievement, but was removed prior to the event's release. Although it was mentioned that this pet might appear in a future patch, no additional information of when or where was given.
With this sudden re-appearance in the PTR data, there was concern that it would be retroactively rewarded for an achievement that's no longer obtainable.
However, Community Manager Bashiok has clarified the situation.
It's old data. The "Hogs" mini-Hogger pet is not a reward from that achievement, and we'll correct it in the next PTR build. We haven't determined yet if/when he'll be obtainable, or from what source.
This is a relief for many collectors. There is still a desire to collect Hogs, so hopefully he finds his way into our collections in the future.
@Abashera
Don't worry there wasn't a pet. The article say that Hogs was originally going to be a pet reward but was removed at the last minute. He no longer has anything to do with the event.
They did do hogger raids. Any time there were a ton of severs down, people would make level 1 humans on whatever servers were still up (usually newer servers) and form raid groups to take Hogger down. They were a ton of fun.
I REALLY wish they'd finally do a Hogger raid... a single boss fight that's just FUN. We've been talking about raiding Hogger for ten years. Would be so great if it happened and there was a pet drop for it. Just do transmog items and the pet. Would be HELLA-fun.
If I knew there was a pet reward for doing that stupid event, I would have entered it. : (
I really hope Graves isn't from the Founder's Pack promotion...I already spend way too much money on pets and mounts. I hope it's like the Hearthstone one- win 3 games and get a free mount!
Still hoping for the mini-Murmur pet too. =/
Looks like we're getting our own personal Grave Golems!