Upgrade/Install: Enable all core autoupdates for new installs.

Likely needs more work for multisite installs.

Reference: https://make.wordpress.org/core/2020/11/10/wp5-6-auto-update-implementation-change/

Props audrasjb, azaozz.
See #51743.

Built from https://develop.svn.wordpress.org/trunk@49581


git-svn-id: http://core.svn.wordpress.org/trunk@49319 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/schema.php

@@ -535,6 +535,13 @@ function populate_options( array $options = array() ) {
 		'disallowed_keys'                 => '',
 		'comment_previously_approved'     => 1,
 		'auto_plugin_theme_update_emails' => array(),
+
+		// 5.6.0
+		'auto_update_core_dev'            => 'enabled',
+		'auto_update_core_minor'          => 'enabled',
+		// Default to enabled for new installs.
+		// See https://core.trac.wordpress.org/ticket/51742.
+		'auto_update_core_major'          => 'enabled',
 	);
 
 	// 3.3.0

wp-admin/includes/upgrade.php

@@ -2255,6 +2255,11 @@ function upgrade_560() {
 	if ( ! is_null( $post_category_exists ) ) {
 		$wpdb->query( "ALTER TABLE $wpdb->posts DROP COLUMN `post_category`" );
 	}
+
+	// When upgrading from WP < 5.6.0 set the core major auto-updates option to `unset` by default.
+	// This overrides the same option from populate_options() that is intended for new installs.
+	// See https://core.trac.wordpress.org/ticket/51742.
+	update_option( 'auto_update_core_major', 'unset' );
 }
 
 /**

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.6-beta3-49580';
+$wp_version = '5.6-beta3-49581';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.