"This is James Fulop, Senior Engine Programmer on the Guild Wars 2 team. DirectX11 support is a project that has been a long time in the making. In this post I am going to go over some of the high-level technical decisions that were made to determine the shape of this project, as well as a walkthrough of our graphics runtime and how the DirectX11 renderer affects performance.
The beta will begin September 21, 2021. You can opt-in to the beta in-game in the Graphics Options menu. The change takes effect after restarting the game."