diff --git a/.version b/.version
index b7c75422..8a7e834d 100644
--- a/.version
+++ b/.version
@@ -1 +1 @@
-5.6.1
+6.0.0-beta.0
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 96f8d652..91cb415b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,29 @@
 # Change Log
 
+## [6.0.0-beta.0](https://github.com/auth0/wp-auth0/tree/6.0.0-beta.0) (2026-08-07)
+[Full Changelog](https://github.com/auth0/wp-auth0/compare/5.6.1...6.0.0-beta.0)
+
+This is a pre-release for the upcoming 6.x major. It moves the plugin onto auth0-php v9, which rewrites the Management API. The authentication flow is unchanged, and the migration is confined to the Management API surface used by background user sync.
+
+**Breaking Changes**
+
+- Bumped the `auth0/auth0-php` dependency from `^8.19` to `^9.0`, which rewrites the Management API
+- Raised the minimum PHP version from `8.1` to `8.2`
+- `getSdk()->management()` is non-functional with auth0-php v9 and throws a `TypeError`. Use the new `getManagement()` accessor instead
+
+**Added**
+
+- `Plugin::getManagement()` accessor returning a v9 `ManagementClient` built from the existing plugin configuration, with automatic client credentials token management and caching
+- `UPGRADING.md` 5.x to 6.x migration guide
+
+**Fixed**
+
+- Background user sync now retries transient Management API failures (429, 5xx) on the next cron pass instead of dropping the queued event
+
+**Unchanged**
+
+- The authentication flow (login, logout, callback, session handling) behaves exactly as in 5.x
+
 ## [5.6.1](https://github.com/auth0/wp-auth0/tree/5.6.1) (2026-05-05)
 
 ### Fixed
diff --git a/wpAuth0.php b/wpAuth0.php
index 79024e30..f225cb09 100644
--- a/wpAuth0.php
+++ b/wpAuth0.php
@@ -4,10 +4,10 @@
  * Plugin Name:       Auth0
  * Plugin URL:        https://github.com/auth0/wordpress
  * Description:       Supercharge your WordPress website with Auth0. Improve account security, add support for multifactor, enable social, passwordless and enterprise connections, and much more.
- * Version:           5.6.1
+ * Version:           6.0.0-beta.0
  * Requires at least: 6.0
  * Tested up to:      7.0
- * Stable tag:        5.6.1
+ * Stable tag:        6.0.0-beta.0
  * Requires PHP:      8.2
  * Author:            Auth0
  * Author URI:        https://auth0.com
@@ -22,7 +22,7 @@
 use Auth0\SDK\Auth0 as Sdk;
 use Auth0\SDK\Configuration\SdkConfiguration as Configuration;
 
-define('WP_AUTH0_VERSION', '5.6.1');
+define('WP_AUTH0_VERSION', '6.0.0-beta.0');
 
 // Require loading through WordPress
 if (! defined('ABSPATH')) {