Display posts with 'future' status

show_future_post.php

<?php
add_filter('the_posts', 'show_future_posts');

function show_future_posts($posts)
{
   global $wp_query, $wpdb;

   if(is_single() && $wp_query->post_count == 0)
   {
      $posts = $wpdb->get_results($wp_query->request);
   }

   return $posts;
}