https://wccftech.com/wow-burning-crusade-classic-release-coming-months/

World of Warcraft: Burning Crusade Classic will be released in the coming months, Blizzard has confirmed.

Yesterday we reported that the classic server option for World of Warcraft’s first official expansion might very well launch next month on June 1st, and while this is still a possibility, fans questioned whether this is indeed happening. As we mentioned, this would imply that the expansion will release globally in less than a month and Blizzard has yet to officially announce the date of the Burning Crusade pre-patch.