Every buyer with access to the product receives approved updates at no extra cost. You can update a product after it has been purchased, and Kurodyne reviews each update before it goes live. An approved update becomes the current release in every buyer's Library and replaces the release they bought, which is no longer available for download. If the update replaces an access link or adds a product key to a product that had none, earlier buyers receive the new value there too.
An update must not remove or narrow what earlier buyers already hold, such as removing the product key or tightening its access requirements. Publish a materially new edition, a different deliverable, or a changed deal as a new product. You can give earlier buyers a discount code for the new product. Included updates don't guarantee that you will publish further updates.