When must the Product Owner release each Increment to production?

The product increment should be released whenever it makes sense. Business owners should always list down the various products that are being sold. This will make it easier to figure out if there are items that would need to be promoted more so that they will sell better. This will act as the sum of all the products sold during a particular period of time.

For example, the company may have had a sale period for one day one; the product increment is needed to see the number of items that have been sold only for the sale period. This will make it easier to keep track of the other items that can be sold at their regular prices.