是的，这是可能的：

function latest_posts_menu($items, $args) {
//To a Specific Menu
if ($args->theme_location == \'primary\') {

    // Parent Menu Item
    $items .= \'<li id="menu-item" class="menu-item">
                <a href="#">\' . __(\'Latest Posts\', \'textdomain\') . \'</a>
                    <ul class="sub-menu">\';
    // Create Sub Menus
    foreach ( get_posts(
                array(
                    \'posts_per_page\'=>10,
                    \'post_type\' => array(\'post\')
                    ) 
            ) as $post ) {
            // Menu Thumbnail. You can change the dimenssion as well as the image class
            $thumb = get_the_post_thumbnail( $post->ID, array(24,24), array("class" => "menu-thumb") );
        $items .= \'<li class="sub-menu-item">
                        \'.$thumb.\'
                        <a href="\'.get_permalink( $post->ID ).\'">\'. $post->post_title .\'</a>
                    </li>\';
    }
    // Close The Menu
    $items .= \'</ul></li>\';
}
    return $items;
}
add_filter( \'wp_nav_menu_items\', \'latest_posts_menu\', 10, 2 );