From c48fe9427126809881b1c0698913f847025f4ea0 Mon Sep 17 00:00:00 2001
From: jack-berg <34418638+jack-berg@users.noreply.github.com>
Date: Fri, 5 Jul 2024 12:07:00 -0500
Subject: [PATCH] Prepare changelog for 1.40.0 release (#6554)

---
 CHANGELOG.md | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index d2fce9518f5..65d98b97f55 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,22 @@
 
 ## Unreleased
 
+### API
+
+#### Incubator
+
+* Narrow ExtendedSpanBuilder return types for chaining
+  ([#6514](https://github.com/open-telemetry/opentelemetry-java/pull/6514))
+* Add APIs to determine if tracer, logger, instruments are enabled
+  ([#6502](https://github.com/open-telemetry/opentelemetry-java/pull/6502))
+
+### SDK
+
+#### Extensions
+
+* Move autoconfigure docs to opentelemetry.io
+  ([#6491](https://github.com/open-telemetry/opentelemetry-java/pull/6491))
+
 ## Version 1.39.0 (2024-06-07)
 
 ### API