Ticket #40430: 40430.2.diff

src/wp-includes/class-wp-customize-manager.php

@@ -4340 +4340 @@
                 $this->add_control( new WP_Customize_Site_Icon_Control( $this, 'site_icon', array(
                         'label'       => __( 'Site Icon' ),
                         'description' => sprintf(
+                                '<p>' . __( 'Site Icons are what you see in browser tabs, bookmark bars, and within the WordPress mobile app. Upload one here!' ) . '</p>' .
                                 /* translators: %s: site icon size in pixels */
-                                __( 'The Site Icon is used as a browser and app icon for your site. Icons must be square, and at least %s pixels wide and tall.' ),
-                                '<strong>512</strong>'
+                                '<p>' . __( 'Site Icons should be square and at least %s pixels.' ) . '</p>',
+                                '<strong>512 &times; 512</strong>'
                         ),
                         'section'     => 'title_tagline',
                         'priority'    => 60,