https://wccftech.com/world-of-warcraft-shadowlands-beta/

The first build for the World of Warcraft Shadowlands Alpha has been deployed by Blizzard and the support article for expansion’s upcoming beta has been updated.

The Shadowlands expansion for World of Warcraft is releasing later this year, and Blizzard has now shipped the first alpha build on World of Warcraft’s vendor CDN, version 9.0.1.33411. To support this new build, Blizzard also updated the Battle.net application. Unfortunately, this first alpha has been encrypted and additional details about its contents are unavailable at this point. The release of this build, however, does suggest that the alpha release might be imminent.