https://wccftech.com/blizzard-wow-classic-development/

Blizzard community manager Ythisens has responded to questions from the World of Warcraft community about the development of WoW Classic.

Since the official announcement of Blizzard’s World of Warcraft vanilla server option back in November of last year, the publisher has been rather quiet about the game’s development state. Blizzard did reveal that they plan to use patch 1.12 as foundation for the game, and we know that Classic is arriving this Summer, but news about the highly anticipated Vanilla server option has been rather scarce.