User can book such products and from this shop owner can analyse the demand and accordingly they can purchase the product. Pre Order for Up-Coming & Not In Stock Products extension provides below functionalities: 1.User can book / order products even if they are not available. 2.Replace the "Add to Cart" button as per "Pre-Order". 3.Replace "Stock Availability" status on product page as per "Pre Order". 4.Display custom stock status on the product page. 5.Supports all product types; - Simple - Grouped - Downloadable - Configurable - Bundle - Virtual 6.Pre-Order functionality can work on product page, product listing page and category page. 7.Pre-Order message can be displayed on Shopping Cart page. 8.Pre-Order message can be displayed on Checkout order review section. 9.Pre-Order message can be displayed on order , invoice , shipment ,credit memo emails