prepare release rocketmq 4.9.0 content
diff --git a/_docs/01-quick-start-guide.md b/_docs/01-quick-start-guide.md
index e071744..71195e3 100644
--- a/_docs/01-quick-start-guide.md
+++ b/_docs/01-quick-start-guide.md
@@ -24,15 +24,15 @@
 
 # Download & Build from Release
 
-Click [here](https://www.apache.org/dyn/closer.cgi?path=rocketmq/4.8.0/rocketmq-all-4.8.0-source-release.zip) to download the 4.8.0 source release. Also you could download a binary release from [here](https://www.apache.org/dyn/closer.cgi?path=rocketmq/4.8.0/rocketmq-all-4.8.0-bin-release.zip).
+Click [here](https://www.apache.org/dyn/closer.cgi?path=rocketmq/4.9.0/rocketmq-all-4.9.0-source-release.zip) to download the 4.9.0 source release. Also you could download a binary release from [here](https://www.apache.org/dyn/closer.cgi?path=rocketmq/4.9.0/rocketmq-all-4.9.0-bin-release.zip).
 
-Now execute the following commands to unpack 4.8.0 source release and build the binary artifact.
+Now execute the following commands to unpack 4.9.0 source release and build the binary artifact.
 
 ```shell
-  > unzip rocketmq-all-4.8.0-source-release.zip
-  > cd rocketmq-all-4.8.0/
+  > unzip rocketmq-all-4.9.0-source-release.zip
+  > cd rocketmq-all-4.9.0/
   > mvn -Prelease-all -DskipTests clean install -U
-  > cd distribution/target/rocketmq-4.8.0/rocketmq-4.8.0
+  > cd distribution/target/rocketmq-4.9.0/rocketmq-4.9.0
 ```
 # Linux 
  
diff --git a/_docs/10-download-releases.md b/_docs/10-download-releases.md
index 5809227..bc2fbeb 100644
--- a/_docs/10-download-releases.md
+++ b/_docs/10-download-releases.md
@@ -22,12 +22,20 @@
 | 4.6.x | >=1.6 | >=1.8 | >=1.8 |
 | 4.7.x | >=1.6 | >=1.8 | >=1.8 |
 | 4.8.x | >=1.6 | >=1.8 | >=1.8 |
+| 4.9.x | >=1.6 | >=1.8 | >=1.8 |
 
 
 # Download links
 
 Use the links below to download the Apache RocketMQ Releases, the latest release is 4.8.0.
 
+## 4.9.0 release
+
+* Released June 15, 2021
+* [Release Notes](/release_notes/release-notes-4.9.0)
+* Source: [rocketmq-all-4.9.0-source-release.zip](https://www.apache.org/dyn/closer.cgi?path=rocketmq/4.9.0/rocketmq-all-4.9.0-source-release.zip) [[PGP](https://www.apache.org/dist/rocketmq/4.9.0/rocketmq-all-4.9.0-source-release.zip.asc)] [[SHA512](https://www.apache.org/dist/rocketmq/4.9.0/rocketmq-all-4.9.0-source-release.zip.sha512)]
+* Binary: [rocketmq-all-4.9.0-bin-release.zip](https://www.apache.org/dyn/closer.cgi?path=rocketmq/4.9.0/rocketmq-all-4.9.0-bin-release.zip) [[PGP](https://www.apache.org/dist/rocketmq/4.9.0/rocketmq-all-4.9.0-bin-release.zip.asc)] [[SHA512](https://www.apache.org/dist/rocketmq/4.9.0/rocketmq-all-4.9.0-bin-release.zip.sha512)]
+
 ## 4.8.0 release
 
 * Released December 21, 2020
diff --git a/_pages/community.md b/_pages/community.md
index fdc48b6..1b33687 100644
--- a/_pages/community.md
+++ b/_pages/community.md
@@ -8,7 +8,7 @@
   cta_label: "<i class='fa fa-rocket'></i> Getting Started"
   cta_url: "/docs/quick-start/"
   caption:
-excerpt: 'Apache RocketMQ™ is a unified messaging engine, lightweight data processing platform.<br /> <small><a href="/release_notes/release-notes-4.8.0/">Latest release v4.8.0</a></small><br /><br /> {::nomarkdown}<iframe style="display: inline-block;" src="https://ghbtns.com/github-btn.html?user=apache&repo=rocketmq&type=star&count=true&size=large" frameborder="0" scrolling="0" width="160px" height="30px"></iframe> <iframe style="display: inline-block;" src="https://ghbtns.com/github-btn.html?user=apache&repo=rocketmq&type=fork&count=true&size=large" frameborder="0" scrolling="0" width="158px" height="30px"></iframe>{:/nomarkdown}'
+excerpt: 'Apache RocketMQ™ is a unified messaging engine, lightweight data processing platform.<br /> <small><a href="/release_notes/release-notes-4.9.0/">Latest release v4.9.0</a></small><br /><br /> {::nomarkdown}<iframe style="display: inline-block;" src="https://ghbtns.com/github-btn.html?user=apache&repo=rocketmq&type=star&count=true&size=large" frameborder="0" scrolling="0" width="160px" height="30px"></iframe> <iframe style="display: inline-block;" src="https://ghbtns.com/github-btn.html?user=apache&repo=rocketmq&type=fork&count=true&size=large" frameborder="0" scrolling="0" width="158px" height="30px"></iframe>{:/nomarkdown}'
 ---
 {% include feature_row id="intro" type="center" %}
 
diff --git a/_pages/users.md b/_pages/users.md
index 6bb14ae..26d3710 100644
--- a/_pages/users.md
+++ b/_pages/users.md
@@ -8,7 +8,7 @@
   cta_label: "<i class='fa fa-rocket'></i> Getting Started"
   cta_url: "/docs/quick-start/"
   caption:
-excerpt: 'Apache RocketMQ™ is a unified messaging engine, lightweight data processing platform.<br /> <small><a href="/release_notes/release-notes-4.8.0/">Latest release v4.8.0</a></small><br /><br /> {::nomarkdown}<iframe style="display: inline-block;" src="https://ghbtns.com/github-btn.html?user=apache&repo=rocketmq&type=star&count=true&size=large" frameborder="0" scrolling="0" width="160px" height="30px"></iframe> <iframe style="display: inline-block;" src="https://ghbtns.com/github-btn.html?user=apache&repo=rocketmq&type=fork&count=true&size=large" frameborder="0" scrolling="0" width="158px" height="30px"></iframe>{:/nomarkdown}'
+excerpt: 'Apache RocketMQ™ is a unified messaging engine, lightweight data processing platform.<br /> <small><a href="/release_notes/release-notes-4.9.0/">Latest release v4.9.0</a></small><br /><br /> {::nomarkdown}<iframe style="display: inline-block;" src="https://ghbtns.com/github-btn.html?user=apache&repo=rocketmq&type=star&count=true&size=large" frameborder="0" scrolling="0" width="160px" height="30px"></iframe> <iframe style="display: inline-block;" src="https://ghbtns.com/github-btn.html?user=apache&repo=rocketmq&type=fork&count=true&size=large" frameborder="0" scrolling="0" width="158px" height="30px"></iframe>{:/nomarkdown}'
 feature_row:
   - image_path: /assets/images/community/alibaba-logo.png
     alt: "Alibaba Group"
diff --git a/home.md b/home.md
index 34a9fcd..25cf696 100644
--- a/home.md
+++ b/home.md
@@ -7,7 +7,7 @@
   cta_label: "<i class='fa fa-rocket'></i> Getting Started"
   cta_url: "/docs/quick-start/"
   caption:
-excerpt: 'Apache RocketMQ™ is a unified messaging engine, lightweight data processing platform.<br /> <small><a href="/release_notes/release-notes-4.8.0/">Latest release v4.8.0</a></small><br /><br /> {::nomarkdown}<iframe style="display: inline-block;" src="https://ghbtns.com/github-btn.html?user=apache&repo=rocketmq&type=star&count=true&size=large" frameborder="0" scrolling="0" width="160px" height="30px"></iframe> <iframe style="display: inline-block;" src="https://ghbtns.com/github-btn.html?user=apache&repo=rocketmq&type=fork&count=true&size=large" frameborder="0" scrolling="0" width="158px" height="30px"></iframe>{:/nomarkdown}'
+excerpt: 'Apache RocketMQ™ is a unified messaging engine, lightweight data processing platform.<br /> <small><a href="/release_notes/release-notes-4.9.0/">Latest release v4.9.0</a></small><br /><br /> {::nomarkdown}<iframe style="display: inline-block;" src="https://ghbtns.com/github-btn.html?user=apache&repo=rocketmq&type=star&count=true&size=large" frameborder="0" scrolling="0" width="160px" height="30px"></iframe> <iframe style="display: inline-block;" src="https://ghbtns.com/github-btn.html?user=apache&repo=rocketmq&type=fork&count=true&size=large" frameborder="0" scrolling="0" width="158px" height="30px"></iframe>{:/nomarkdown}'
 feature_row:
   - image_path: /assets/images/bright/rmq-feature-lowlatency.png
     alt: "Low Latency"