Ninth in a long series started over a month ago already, Build 9.0.1.33874 of the Alpha of World of Warcraft: Shadowlands was deployed today. It is not an April Fool since we unfortunately still do not know what this mysterious patch contains ... It is indeed still and always encrypted and will not give us information before Blizzard decides to give us access.
No communication has yet been made on the Blizzard side, and no date can really be estimated yet for the deployment of this highly anticipated Shadowlands Alpha . The earliest would be best.