diff --git a/doc/releases/release-notes-4.2.rst b/doc/releases/release-notes-4.2.rst
index 6f917c9077e3..003f1c0afb59 100644
--- a/doc/releases/release-notes-4.2.rst
+++ b/doc/releases/release-notes-4.2.rst
@@ -73,6 +73,8 @@ Removed APIs and options
 
 * Removed the ``get_ctrl`` video driver API
 
+* Removed ``CONFIG_I3C_USE_GROUP_ADDR`` and support for group addresses for I3C devices.
+
 Deprecated APIs and options
 ===========================
 
@@ -152,6 +154,14 @@ New APIs and options
   * :c:macro:`I2C_DEVICE_DT_DEINIT_DEFINE`
   * :c:macro:`I2C_DEVICE_DT_INST_DEINIT_DEFINE`
 
+* I3C
+
+  * :kconfig:option:`CONFIG_I3C_MODE`
+  * :kconfig:option:`CONFIG_I3C_CONTROLLER_ROLE_ONLY`
+  * :kconfig:option:`CONFIG_I3C_TARGET_ROLE_ONLY`
+  * :kconfig:option:`CONFIG_I3C_DUAL_ROLE`
+  * :c:func:`i3c_ccc_do_rstdaa`
+
 * SPI
 
   * :c:macro:`SPI_DEVICE_DT_DEINIT_DEFINE`
@@ -732,6 +742,7 @@ New Drivers
 
    * :dtcompatible:`ite,it51xxx-i3cm`
    * :dtcompatible:`ite,it51xxx-i3cs`
+   * :dtcompatible:`renesas,ra-i3c`
 
 * Input
 
@@ -910,6 +921,7 @@ New Drivers
    * :dtcompatible:`aesc,uart`
    * :dtcompatible:`ambiq,pl011-uart`
    * :dtcompatible:`bflb,uart`
+   * :dtcompatible:`ene,kb106x-uart`
    * :dtcompatible:`espressif,esp32-lpuart`
    * :dtcompatible:`ite,it51xxx-uart`
    * :dtcompatible:`renesas,rx-uart-sci`