Docs: Release notes for v1.8.1

Signed-off-by: Antonio de Angelis <antonio.deangelis@arm.com>
Change-Id: I5f2c6a5eb86d7cbb19ae75d8765b48e77e2997c7
diff --git a/docs/releases/1.8.1.rst b/docs/releases/1.8.1.rst
new file mode 100644
index 0000000..fae8f14
--- /dev/null
+++ b/docs/releases/1.8.1.rst
@@ -0,0 +1,15 @@
+*************
+Version 1.8.1
+*************
+
+Hotfixes
+========
+
+ - Fix for "Partial tag comparison when using Chacha20-Poly1305
+   on the PSA driver API interface in CryptoCell enabled
+   platforms" (`CVE-2023-40271 <https://www.cve.org/CVERecord?id=CVE-2023-40271>`_)
+   (:doc:`TFMV-6 </security/security_advisories/cc3xx_partial_tag_compare_on_chacha20_poly1305>`)
+
+--------------
+
+*Copyright (c) 2023, Arm Limited. All rights reserved.*
diff --git a/docs/releases/index.rst b/docs/releases/index.rst
index 3cd0f4f..5a3c80d 100644
--- a/docs/releases/index.rst
+++ b/docs/releases/index.rst
@@ -4,6 +4,7 @@
 .. toctree::
     :hidden:
 
+    v1.8.1 <1.8.1>
     v1.8.0 <1.8.0>
     v1.7.0 <1.7.0>
     v1.6.1 <1.6.1>
@@ -13,6 +14,8 @@
 +--------------------------------------+--------------+----------------------------+
 | Version                              | Date         | PSA-arch tag/hash          |
 +======================================+==============+============================+
+| :doc:`v1.8.1 </releases/1.8.1>`      | TBC          | cf8bd71                    |
++--------------------------------------+--------------+----------------------------+
 | :doc:`v1.8.0 </releases/1.8.0>`      | 2023-04-28   | cf8bd71                    |
 +--------------------------------------+--------------+----------------------------+
 | :doc:`v1.7.0 </releases/1.7.0>`      | 2022-12-08   | cf8bd71                    |