Blizzard sent out the following

November marks the 15th anniversary of World of Warcraft! As part of the continuing anniversary celebration that began with the launch of WoW Classic, starting today, players who log in to Battle for Azeroth will receive a special package that includes a Lil’ Nefarian pet. Additionally, there are a few activities throughout the celebration that players won’t want to miss:

Memories of Azeroth – This Raid Finder event will take players back in time to boss encounters from The Burning Crusade, Wrath of the Lich King, and Cataclysm. Players who conquer these trials will be rewarded with the Obsidian Worldbreaker, a Deathwing-inspired mount!

Return to Alterac Valley – PVP players will get to experience the Alterac Valley battleground as it existed in its earliest days. Complete the Alterac Valley of Olde achievement and earn two new mounts: the Stormpike Battle Ram (Alliance) and the Frostwolf Snarler (Horde).

More information about the anniversary celebration can be found on our blog:  https://worldofwarcraft.com/en-us/news/23214313/celebrate-15-years-of-world-of-warcraft

Happy 15th to WoW