diff --git a/wp-includes/block-editor.php b/wp-includes/block-editor.php
index 1a5e8f6e2d..62ad62049c 100644
--- a/wp-includes/block-editor.php
+++ b/wp-includes/block-editor.php
@@ -495,6 +495,7 @@ function get_block_editor_settings( array $custom_settings, $block_editor_contex
 	}
 
 	$editor_settings['__unstableResolvedAssets']         = _wp_get_iframed_editor_assets();
+	$editor_settings['__unstableIsBlockBasedTheme']      = wp_is_block_theme();
 	$editor_settings['localAutosaveInterval']            = 15;
 	$editor_settings['disableLayoutStyles']              = current_theme_supports( 'disable-layout-styles' );
 	$editor_settings['__experimentalDiscussionSettings'] = array(
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 6b100e7379..5857623b05 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.2-alpha-55146';
+$wp_version = '6.2-alpha-55147';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.