All Gluon products are sold based on a subscription model. This means that when you purchase a subscription, you receive updates free of any additional charges while the subscription is active (i.e. paid up). This includes all updates, be they minor service updates or a major new version. After the subscription lapses, you continue to retain a valid license for all versions of the software which were released during the time in which your subscription was active. In other words, if you choose not to renew, you can continue using the last version you obtained or are eligible to use. The subscription time frame is merely for new versions/updates and does not apply to rights of use (as long as the EULA is not violated).