From 5384f8a8fac8678d1de9838caa17b73b8e5942d3 Mon Sep 17 00:00:00 2001
From: Peter Harris <peter.harris@arm.com>
Date: Tue, 6 Aug 2024 13:17:47 +0100
Subject: [PATCH] Update changelog

---
 Docs/ChangeLog-4x.md | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Docs/ChangeLog-4x.md b/Docs/ChangeLog-4x.md
index e761c54f..fe973ba3 100644
--- a/Docs/ChangeLog-4x.md
+++ b/Docs/ChangeLog-4x.md
@@ -6,6 +6,20 @@ release of the 4.x series.
 All performance data on this page is measured on an Intel Core i5-9600K
 clocked at 4.2 GHz, running `astcenc` using AVX2 and 6 threads.
 
+<!-- ---------------------------------------------------------------------- -->
+## 4.9.0
+
+**Status:** In development
+
+The 4.9.0 release is a minor maintenance release.
+
+* **General:**
+  * **Bug fix:** Fixed incorrect return type in "None" vector library
+    reference implementation.
+  * **Feature:** Added backend for Arm SVE fixed-width 256-bit builds.
+  * **Feature:** Optimized NEON mask `any()` and `all()` functions.
+  * **Feature:** Migrated build and test to GitHub Actions pipelines.
+
 <!-- ---------------------------------------------------------------------- -->
 ## 4.8.0