Redirecting search to specific templates with $_GET[“post_type”]

I think you need to check status in your search-news.php template. And if $_GET['status'] is equal to future, create custom loop for it. Your search-news.php could look something like this:

if ( $_GET['status'] == 'future' ) :

    $the_query = new WP_Query( array(
        'post_type'   => 'news',
        'post_status' => 'future',
        // else arguments ...
    ) ); 

    while ( $the_query->have_posts() ) : $the_query->the_post();
        // do stuff ...
    endwhile;

    wp_reset_postdata();

else :

    // do normal news stuff ...

endif;