Patch 12.1.5 launches tomorrow and Blizzard has released a trailer for the patch!

Patch 12.1.5 Overview

This trailer covers some of the features of the Patch:

The Kith’ix Campaign

New Aqir Invasions

Labyrinths – A Multi-Wing Delve Exploration

Confront the New Nemesis Boss

The Unbinding of Kith’ix raid.

… ending with a teaser of Xal’atath