2023-10-24, Version 20.9.0 'Iron' (LTS)

Notable changes:

This release marks the transition of Node.js 20.x into Long Term Support (LTS)
with the codename 'Iron'. The 20.x release line now moves into "Active LTS"
and will remain so until October 2024. After that time, it will move into
"Maintenance" until end of life in April 2026.

PR-URL: #50298

Author: richardlau

CHANGELOG.md

@@ -2,9 +2,9 @@
 
 Select a Node.js version below to view the changelog history:
 
-* [Node.js 20](doc/changelogs/CHANGELOG_V20.md) **Current**
+* [Node.js 20](doc/changelogs/CHANGELOG_V20.md) **Long Term Support**
 * [Node.js 19](doc/changelogs/CHANGELOG_V19.md) **Current**
-* [Node.js 18](doc/changelogs/CHANGELOG_V18.md) **Long Term Support**
+* [Node.js 18](doc/changelogs/CHANGELOG_V18.md) Long Term Support
 * [Node.js 17](doc/changelogs/CHANGELOG_V17.md) End-of-Life
 * [Node.js 16](doc/changelogs/CHANGELOG_V16.md) End-of-Life
 * [Node.js 15](doc/changelogs/CHANGELOG_V15.md) End-of-Life
@@ -29,14 +29,15 @@ release.
 
 <table>
 <tr>
-  <th title="Current"><a href="doc/changelogs/CHANGELOG_V20.md">20</a> (Current)</th>
+  <th title="LTS Until 2026-04"><a href="doc/changelogs/CHANGELOG_V20.md">20</a> (LTS)</th>
   <th title="Current"><a href="doc/changelogs/CHANGELOG_V19.md">19</a> (Current)</th>
   <th title="LTS Until 2025-04"><a href="doc/changelogs/CHANGELOG_V18.md">18</a> (LTS)</th>
   <th title="LTS Until 2023-09"><a href="doc/changelogs/CHANGELOG_V16.md">16</a> (LTS)</th>
 </tr>
 <tr>
   <td valign="top">
-<b><a href="doc/changelogs/CHANGELOG_V20.md#20.8.1">20.8.1</a></b><br/>
+<b><a href="doc/changelogs/CHANGELOG_V20.md#20.9.0">20.9.0</a></b><br/>
+<a href="doc/changelogs/CHANGELOG_V20.md#20.8.1">20.8.1</a><br/>
 <a href="doc/changelogs/CHANGELOG_V20.md#20.8.0">20.8.0</a><br/>
 <a href="doc/changelogs/CHANGELOG_V20.md#20.7.0">20.7.0</a><br/>
 <a href="doc/changelogs/CHANGELOG_V20.md#20.6.1">20.6.1</a><br/>

doc/changelogs/CHANGELOG_V20.md

@@ -4,10 +4,14 @@
 
 <table>
 <tr>
+<th>LTS 'Iron'</th>
 <th>Current</th>
 </tr>
 <tr>
 <td>
+<a href="#20.9.0">20.9.0</a><br/>
+</td>
+<td>
 <a href="#20.8.1">20.8.1</a><br/>
 <a href="#20.8.0">20.8.0</a><br/>
 <a href="#20.7.0">20.7.0</a><br/>
@@ -47,6 +51,24 @@
   * [io.js](CHANGELOG_IOJS.md)
   * [Archive](CHANGELOG_ARCHIVE.md)
 
+<a id="20.9.0"></a>
+
+## 2023-10-24, Version 20.9.0 'Iron' (LTS), @richardlau
+
+### Notable Changes
+
+This release marks the transition of Node.js 20.x into Long Term Support (LTS)
+with the codename 'Iron'. The 20.x release line now moves into "Active LTS"
+and will remain so until October 2024. After that time, it will move into
+"Maintenance" until end of life in April 2026.
+
+### Known issue
+
+Collecting code coverage via the `NODE_V8_COVERAGE` environment variable may
+lead to a hang. This is not thought to be a regression in Node.js 20 (some
+reports are on Node.js 18). For more information, including some potential
+workarounds, see issue [#49344](https://github.com/nodejs/node/issues/49344).
+
 <a id="20.8.1"></a>
 
 ## 2023-10-13, Version 20.8.1 (Current), @RafaelGSS

src/node_version.h

@@ -23,13 +23,13 @@
 #define SRC_NODE_VERSION_H_
 
 #define NODE_MAJOR_VERSION 20
-#define NODE_MINOR_VERSION 8
-#define NODE_PATCH_VERSION 2
+#define NODE_MINOR_VERSION 9
+#define NODE_PATCH_VERSION 0
 
-#define NODE_VERSION_IS_LTS 0
-#define NODE_VERSION_LTS_CODENAME ""
+#define NODE_VERSION_IS_LTS 1
+#define NODE_VERSION_LTS_CODENAME "Iron"
 
-#define NODE_VERSION_IS_RELEASE 0
+#define NODE_VERSION_IS_RELEASE 1
 
 #ifndef NODE_STRINGIFY
 #define NODE_STRINGIFY(n) NODE_STRINGIFY_HELPER(n)

test/parallel/test-process-release.js

@@ -25,6 +25,8 @@ if (versionParts[0] === '4' && versionParts[1] >= 2) {
   assert.strictEqual(process.release.lts, 'Gallium');
 } else if (versionParts[0] === '18' && versionParts[1] >= 12) {
   assert.strictEqual(process.release.lts, 'Hydrogen');
+} else if (versionParts[0] === '20' && versionParts[1] >= 9) {
+  assert.strictEqual(process.release.lts, 'Iron');
 } else {
   assert.strictEqual(process.release.lts, undefined);
 }