by Fahad Mahmood on WordPress.org
Display 'Coming Soon' messages for your WooCommerce products and control product availability easily.

Coming Soon (WordPress & WooCommerce)
Easily mark WooCommerce products as ‘Coming Soon’ directly from the product edit page. Display custom messages, control visibility, and automatically publish products when they become available.
Important!
Visit my blog and suggest good features which you wana see in this plugin.
woocommerce, products, sales, checkout, cart, shop, add to cart, loop page
Method-A:
Go to your wordpress admin “yoursite.com/wp-admin”
Login and then access “yoursite.com/wp-admin/plugin-install.php?tab=upload
Upload and activate this plugin
Now you can see a coming soon button on product (add/edit) page
Method-B:
Coming Soon Plugin in the wp-content/plugins directory of your WordPress installation. Use an FTP or SFTP client to upload the contents of your woo-coming-soon archive to the new directory that you just created on your web host. Coming Soon Plugin is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 2 of the License, or any later version. This plugin is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this plugin. If not, see http://www.gnu.org/licenses/gpl-2.0.html.