Updated BRANCHES.md

Signed-off-by: Minos Galanakis <minos.galanakis@arm.com>
diff --git a/BRANCHES.md b/BRANCHES.md
index cf86a9d..93bcbbd 100644
--- a/BRANCHES.md
+++ b/BRANCHES.md
@@ -107,9 +107,10 @@
 - [`development`](https://github.com/Mbed-TLS/mbedtls/)
 - [`mbedtls-3.6`](https://github.com/Mbed-TLS/mbedtls/tree/mbedtls-3.6)
  maintained until March 2027, see
-  <https://github.com/Mbed-TLS/mbedtls/releases/tag/v3.6.2>.
-- [`mbedtls-2.28`](https://github.com/Mbed-TLS/mbedtls/tree/mbedtls-2.28)
- maintained until the end of 2024, see
-  <https://github.com/Mbed-TLS/mbedtls/releases/tag/v2.28.9>.
+  <https://github.com/Mbed-TLS/mbedtls/releases/tag/v3.6.3>.
+
+> Note: [**`mbedtls-2.28.10`**](https://github.com/Mbed-TLS/mbedtls/releases/tag/v2.28.10)
+is the last release of the 2.28 LTS and won't receive bug fixes or security fixes anymore.
+Users are advised to upgrade to a maintained version.
 
 Users are urged to always use the latest version of a maintained branch.