diff --git a/data/ui.yml b/data/ui.yml
index 0fc2ca6e1eb7..e81055ac2b23 100644
--- a/data/ui.yml
+++ b/data/ui.yml
@@ -4,6 +4,9 @@ header:
   notices:
     ghae_silent_launch:
       GitHub AE is currently under limited release. Please <a href="https://enterprise.github.com/contact">contact our Sales Team</a> to find out more.
+    release_candidate:
+      # The version name is rendered before the below text via includes/header-notification.html
+      ' is currently under limited release as a release candidate.'
     localization_complete:
       We publish frequent updates to our documentation, and translation of this page may still be in progress.
       For the most current information, please visit the
@@ -15,9 +18,6 @@ header:
       still in translation. For the most up-to-date and accurate information,
       please visit our
       <a id="to-english-doc" href="/en">English documentation</a>.
-    product_in_progress:
-      👋 Hello, explorer! This page is under active development. For the
-      most up-to-date and accurate information, please visit our <a href="https://developer.github.com">developer documentation</a>.
 search:
   need_help: Need help?
   placeholder: Search topics, products...
@@ -132,4 +132,4 @@ footer:
       shop: Shop
 product_landing:
   quick_start: Quickstart
-  reference_guides: Reference guides
\ No newline at end of file
+  reference_guides: Reference guides
diff --git a/data/variables/release_candidate.yml b/data/variables/release_candidate.yml
new file mode 100644
index 000000000000..026d2f7e61ab
--- /dev/null
+++ b/data/variables/release_candidate.yml
@@ -0,0 +1 @@
+version: ''
diff --git a/includes/header-notification.html b/includes/header-notification.html
index 416f6686b19c..7c5cc5e8a0f8 100644
--- a/includes/header-notification.html
+++ b/includes/header-notification.html
@@ -21,6 +21,11 @@
 {% if currentVersion == "github-ae@latest" %}
   {% assign release_notification_type = "true" %}
   {% assign release_notification = site.data.ui.header.notices.ghae_silent_launch %}
+
+<!-- Release candidate notice -->
+{% elsif currentVersion == site.data.variables.release_candidate.version %}
+  {% assign release_notification_type = "true" %}
+  {% assign release_notification = allVersions[currentVersion].versionTitle | append: site.data.ui.header.notices.release_candidate %}
 {% endif %}
 <!-- END RELEASE NOTICES -->
 
diff --git a/script/release-banner.js b/script/release-banner.js
new file mode 100755
index 000000000000..b5a1bd414a40
--- /dev/null
+++ b/script/release-banner.js
@@ -0,0 +1,60 @@
+#!/usr/bin/env node
+
+const fs = require('fs')
+const path = require('path')
+const program = require('commander')
+const yaml = require('js-yaml')
+const allVersions = require('../lib/all-versions')
+const releaseCandidateFile = 'data/variables/release_candidate.yml'
+const releaseCandidateYaml = path.join(process.cwd(), releaseCandidateFile)
+
+const allowedActions = ['create', 'remove']
+
+// [start-readme]
+//
+// This script creates or removes a release candidate banner for a specified version.
+//
+// [end-readme]
+
+program
+  .description('Create or remove a release candidate banner for the provided docs version.')
+  // The following two settings let us use `version` as a flag without clashing with reserved opts
+  .storeOptionsAsProperties(false)
+  .passCommandToAction(false)
+  .option(`-a, --action <${allowedActions.join(' or ')}>`, 'Create or remove the banner.')
+  .option('-v, --version <version>', 'The version the banner applies to. Must be in <plan@release> format.')
+  .parse(process.argv)
+
+const options = program.opts()
+
+if (!allowedActions.includes(options.action)) {
+  console.log(`Error! You must specify --action <${allowedActions.join(' or ')}>.`)
+  process.exit(1)
+}
+
+if (!(Object.keys(allVersions).includes(options.version))) {
+  console.log('Error! You must specify --version with the full name of a supported version, e.g., enterprise-server@2.22.')
+  process.exit(1)
+}
+
+// Load the release candidate variable
+const releaseCandidateData = yaml.safeLoad(fs.readFileSync(releaseCandidateYaml, 'utf8'))
+
+// Create or remove the variable
+if (options.action === 'create') {
+  releaseCandidateData.version = options.version
+}
+
+if (options.action === 'remove') {
+  releaseCandidateData.version = ''
+}
+
+// Update the file
+fs.writeFileSync(releaseCandidateYaml, yaml.safeDump(releaseCandidateData))
+
+// Display next steps
+console.log(`\nDone! Commit the update to ${releaseCandidateFile}. This ${options.action}s the banner for ${options.version}.
+
+- To change the banner text, you can edit header.notices.release_candidate in data/ui.yml.
+- To change the banner styling, you can edit includes/header-notification.html.
+`)