Whats new updates for v3.13.1 . (#6670)

Author: trexfeathers

docs/src/whatsnew/3.13.rst

@@ -11,7 +11,6 @@ This document explains the changes made to Iris for this release
    :color: primary
    :icon: info
    :animate: fade-in
-   :open:
 
    The highlights for this minor release of Iris include:
 
@@ -43,6 +42,22 @@ This document explains the changes made to Iris for this release
    any issues or feature requests for improving Iris. Enjoy!
 
 
+v3.13.1 (26 Aug 2025)
+=====================
+
+.. dropdown:: v3.13.1 Patches
+   :color: primary
+   :icon: alert
+   :animate: fade-in
+   :open:
+
+   The patches in this release of Iris include:
+
+   #. Improved compatibility with NumPy >= v1.25 for array comparisons, in
+      response to deprecations around un-broadcastable arrays.
+      :ref:`See the full entry for more<3_12_3_array_comparison>`.
+
+
 📢 Announcements
 ================