Post date

There is no setting for it currently, you will have to use the pop_tab_title hook.

function modify_pop_recent_title( $title, $post ) {
	return '<span class="pop-title title">'. $title . '<span class="post-date">' . date_i18n( get_option('date_format'), $date ) ,'</span></span>' ;
}
add_filter('pop_recent_title', 'modify_pop_recent_title');