Shadowlands Alpha build 35078 is actually the Beta build that fansites and streamers were invited by Blizzard Entertainment to play around July 8-9.
In this build, level 59 players who have gone through the core questline of the 4 zones are greeted with a quest in Oribos by Bolvar Fordragon.
This quest titled Seeking the Baron sends you to The Maw as an intro questline at max level into that zone.
Sadly, one of the quests toward the end of the video is broken. Pets can aggro mobs while in the protective barrier of Ve’nari as you walk toward the Perdition Hold.
I will show you the video as a preview, until next build fixes the bug; or until I get another character to that point.