diff --git a/doc/releases/release-notes-4.0.rst b/doc/releases/release-notes-4.0.rst
index 4bf2f9e36d99858..7a1584742c9f720 100644
--- a/doc/releases/release-notes-4.0.rst
+++ b/doc/releases/release-notes-4.0.rst
@@ -163,6 +163,15 @@ Drivers and Sensors
 
 * GPIO
 
+  * pca_series: added ``pca_series`` driver to unify support to tca and pca series I2C-based
+    gpio expanders.
+
+  * pca953x: removed and replaced with an API equivalent driver ``pca_series``.
+
+  * pca95xx: removed and replaced with an API equivalent driver ``pca_series``.
+
+  * pcal64xxa: removed and replaced with an API equivalent driver ``pca_series``.
+
 * Hardware info
 
 * I2C