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+**Breaking changes**
+
+- Removed the following exported `.css` files:
+  - `@elastic/eui/dist/eui_theme_light.css`
+  - `@elastic/eui/dist/eui_theme_light.min.css`
+  - `@elastic/eui/dist/eui_theme_dark.css`
+  - `@elastic/eui/dist/eui_theme_dark.min.css`
+- All EUI components are now on CSS-in-JS. A CSS file/import in consuming applications is no longer needed, and is safe to remove.