diff --git a/wp-admin/includes/theme.php b/wp-admin/includes/theme.php
index ab751689f0..d5c6a549eb 100644
--- a/wp-admin/includes/theme.php
+++ b/wp-admin/includes/theme.php
@@ -782,6 +782,7 @@ function wp_prepare_themes_for_js( $themes = null ) {
 					? wp_nonce_url( admin_url( 'themes.php?action=' . $auto_update_action . '&stylesheet=' . $encoded_slug ), 'updates' )
 					: null,
 			),
+			'block_theme'    => $theme->is_block_theme(),
 		);
 	}
 
diff --git a/wp-admin/themes.php b/wp-admin/themes.php
index 9863aa68ae..3ef411bb6c 100644
--- a/wp-admin/themes.php
+++ b/wp-admin/themes.php
@@ -900,11 +900,13 @@ function wp_theme_auto_update_setting_template() {
 					$aria_label = sprintf( _x( 'Activate %s', 'theme' ), '{{ data.name }}' );
 					?>
 					<a class="button activate" href="{{{ data.actions.activate }}}" aria-label="<?php echo esc_attr( $aria_label ); ?>"><?php _e( 'Activate' ); ?></a>
-					<?php
-					/* translators: %s: Theme name. */
-					$live_preview_aria_label = sprintf( _x( 'Live Preview %s', 'theme' ), '{{ data.name }}' );
-					?>
-					<a aria-label="<?php echo esc_attr( $live_preview_aria_label ); ?>" class="button button-primary load-customize hide-if-no-customize" href="{{{ data.actions.customize }}}"><?php _e( 'Live Preview' ); ?></a>
+					<# if ( ! data.block_theme ) { #>
+						<?php
+						/* translators: %s: Theme name. */
+						$live_preview_aria_label = sprintf( _x( 'Live Preview %s', 'theme' ), '{{ data.name }}' );
+						?>
+						<a aria-label="<?php echo esc_attr( $live_preview_aria_label ); ?>" class="button button-primary load-customize hide-if-no-customize" href="{{{ data.actions.customize }}}"><?php _e( 'Live Preview' ); ?></a>
+					<# } #>
 				<# } else { #>
 					<?php
 					/* translators: %s: Theme name. */
diff --git a/wp-includes/version.php b/wp-includes/version.php
index a427642995..fd428ed4fc 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.9-beta1-52340';
+$wp_version = '5.9-beta1-52341';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.