The previous purchasing model for SGPro was based around what are called “major” version changes. In SGPro’s 10 years, we have only ever had one of these (SGPro 2 to 3). When the major version changed, we charged a one-time upgrade fee for the upgrade. The SGPro subscription model will no longer charge any type of fee for version changes (major or otherwise) and, as a subscriber, you are always entitled to upgrade to the latest version of SGPro, regardless of version number. In addition to upgrades, you will gain access to the Premium Support area of the forum. Support requests in this area will always be prioritized above any that are reported in the public area. More information, including FAQs for subscriptions,can be found here.