Index: src/wp-admin/about.php
===================================================================
--- src/wp-admin/about.php	(revision 47861)
+++ src/wp-admin/about.php	(working copy)
@@ -76,6 +76,31 @@
 					);
 					?>
 				</p>
+				<p>
+					<?php
+					printf(
+						/* translators: 1: WordPress version number, 2: plural number of bugs. More than one security issue. */
+						_n(
+							'<strong>Version %1$s</strong> addressed some security issues and fixed %2$s bug.',
+							'<strong>Version %1$s</strong> addressed some security issues and fixed %2$s bugs.',
+							11
+						),
+						'5.4.2',
+						number_format_i18n( 20 )
+					);
+					?>
+					<?php
+					printf(
+						/* translators: %s: HelpHub URL */
+						__( 'For more information, see <a href="%s">the release notes</a>.' ),
+						sprintf(
+							/* translators: %s: WordPress version */
+							esc_url( __( 'https://wordpress.org/support/wordpress-version/version-%s/' ) ),
+							sanitize_title( '5.4.2' )
+						)
+					);
+					?>
+				</p>
 			</div>
 		</div>