Will Worgen have Tails?

Yes actually Worgens will be able to choose from quite a range of different tails: Long Soft Tails, Mangled Tails, Thick Scaly Tails, Massive Scaly Tails, Coarse Bear Tails, Timber Worg Tails, Large Basilisk Tails, Thunderlord Dire Wolf Tails, Blood Soaked Tails and Crispy Lizard Tails -- to name but a few.

They'll need to loot these tails from the correct mobs, but yes, a vast selection of tails are available for Worgen who want them.