docs/release_notes/4.2/cycles.md

@@ -9,9 +9,16 @@ See the [documentation](https://docs.blender.org/manual/en/4.2/render/shader_nod
 ![Connecting two spaces through a portal](images/render_shader-nodes_ray-portal-bsdf_gateway-example.jpg)
 ![Simulating a camera feed](images/render_shader-nodes_ray-portal-bsdf_portal-to-screen-example.jpg)
 
+## Thin Film Interference
+
+The Principled BSDF now supports physically accurate thin film interference effects for specular reflection and transmission. (blender/blender!118477)
+
+Initially, this is only applied to dielectric materials, support for metallic thin film effects is planned later. Similarly, the effect is not yet supported by EEVEE.
+
+![Simulating soap bubbles](images/thinfilm-bubbles.jpg)
+
 ## Shaders
 
-* The Principled BSDF now supports physically accurate thin film interference effects for specular reflection and transmission. (blender/blender!118477)
 * Principled Hair with the Huang model now provides more accurate results when viewing hairs close up, by dynamically switching between a near and far field model depending on the distance. (blender/blender!116094)
 * Subsurface Scattering node now has a Roughness input, matching the Principled BSDF. (blender/blender!114499)
 
@@ -22,3 +29,5 @@ See the [documentation](https://docs.blender.org/manual/en/4.2/render/shader_nod
 * OpenImageDenoise is now GPU accelerated on AMD GPUs on Windows and Linux.
 * OpenImageDenoise can now use GPU accelerated denoising for CPU renders. (blender/blender!118841)
 * Intel GPU rendering now supports host memory fallback. (blender/blender!122385)
+* Cycles now supports using blue-noise-distributed samples to improve the visual quality of renders. (blender/blender!123274)
+  * New files will use this mode by default, while existing files continue to use the previous default (which is still available as an option under Sampling->Advanced->Pattern).