YITH PreOrder for WooCommerce Premium GPL Overview:

• Set simple and variable products as “pre-order”
• Quickly filter all of the orders that contain products purchased during “pre-order”
• A dedicated section on “My Account” page to keep track of all pre-orders
• All of the features of the Free Version
• Set an expiration date for a pre-order period
• Make products available for purchase automatically at the end of the “pre-order” period
• Admins are notified of each product that’s approaching the end of its pre-order periods: emails are dispatched a set amount of days before a “pre-order” period expires
• Users will receive an email notification for products that are out of their “pre-order” period and has become available for purchase
• Turn out-of-stock products into pre-orders automatically
• A chance to dynamically edit the price of single products during their pre-order periods:
  • fixed or % discount on the base price
  • fixed or % markup on the base price
• WordPress Bulk action on applying “pre-order” status to several products at the same time (grouped by tag and/or category)
• Prevent adding to cart “pre-order” products and other products of the shop simultaneously
• Prevent adding more than one “pre-order” product to the cart New
• Enable option to show that a variable product is Pre-Order if all variations have the Pre-Order status