Once upon a time we had a half-joke saying that all guild members should have Frostwolf Howler mounts. And most of us do.
But I read this on Bubbles of Mischief, from the PTR, and was VERY excited:
I had just completed a common Draenor project in Frostfire when the next one revealed the Ancient Frostwolf Fang:
"In life, no two creatures will share a stronger relationship than that of a Frostwolf orc and his or her companion wolf. The two eat, sleep, and fight side by side until one or both dies an honorable death. Even then, sometimes not even death itself can stop a frostwolf from coming to the aid of its beloved orc."
This gives you the Frostwolf Ghostpup.
The picture is from Bubbles of Mischief, as I have not done the PTR quest myself, but it is all kinds of awesome. It's a battle pet. It's ADORABLE. And it's a FROSTWOLF.
Need I say more? Frostwolves, I just have found yet another reason to be excited about the expansion. BRING IT ON! And yes, this will be a guild requirement! The GM has spoken.