Unity 6.3 Beta released. Custom shaders are available in the UI Toolkit. Functions such as the ability to draw 3D meshes in 2D scenes are also implemented.

Unity 6.3 Beta released. Custom shaders are available in the UI Toolkit. Functions such as the ability to draw 3D meshes in 2D scenes are also implemented.
"Unity 6.3 Beta (6000.3.0b1)" to be released on September 9, 2025 (local time) "UI Toolkit" includes a function that allows you to create custom shaders using Shader Graph, and the ability to render 3D meshes into 2D scenes is also implemented...

The linked article is in Japanese.