https://wccftech.com/bfa-tides-of-vengeance-patch-8-1-trailer/

To celebrate the launch of Battle for Azeroth’s first major content update, Blizzard has released the Tides of Vengeance Patch 8.1 trailer and a set of high quality images.

Patch 8.1 Tides of Vengeance became available as of yesterday in the US, and those in the EU will be able to play the latest content update starting today. The patch has now received its very own trailer, which can be seen below. The trailer shows both the Alliance and Horde preparing for War in the Battle of Dazar’alor.