The Amethyst Update

 is an update for Total War: Warhammer II which released on 16th May 2019. It followed the Doomsayers Update.

Patch notes can be found here: https://www.totalwar.com/blog/the-amethyst-update/

The Amethyst Update released alongside the Amethyst Wizard, a new FLC unit for The Empire in Mortal Empires.