According to Classic/TBC streamer Kargoz, content creators have been told to delete their TBC private server content if they don't wanna be removed from the TBC beta list. : r/classicwow
World of Warcraft: Burning Crusade Classic Deep Dive — World of Warcraft — Blizzard News
Blizzard Expanding Free Character Transfers on TBC Classic Servers - Warcraft Tavern
WoW Classic TBC release date: Burning Crusade fans face big server choice | Gaming | Entertainment | Express.co.uk
A Formal Request Thread for Fresh/New TBC Servers - Burning Crusade Classic Discussion - World of Warcraft Forums