From SpinetiX Support Wiki
Starting with the launch of Elementi 2015 product, the Update Plan subscription has also been introduced, as a convenient way for our long-supporting customers to be able to update their existing Elementi 3.x deployments to the latest product version at a lower cost than buying new licenses for that purpose. In the same manner, new customers benefit of the same convenience for updating to future Elementi products.
How does that work?
It's simple - every new Elementi license comes with one-year free Update Plan subscription, which starts when the license is activated for the first time on a PC. For more details, see the "Limited Warranty" section from Elementi EULA.
This means that any new Elementi version released within this one-year period can be installed and used for free. With other words, now only that you will get minor bug-fixing releases for the Elementi version you purchased, but might also be getting the next Elementi product for free!
Will Elementi stop working at the end of that one-year period?
No, definitely not! You can continue to use the last Elementi version downloaded and installed during the Update Plan period as long as you like. What changes at the end of the subscription period, is that are you are no longer entitled to free software updates.
If you would like to have that back, you need to request an Update Plan extension (premium service) for that license and benefit from future Elementi software releases in the same manner.
Can I test the new version first?
Yes, Elementi versions released after the Update Plan end-date, can be installed & tested for 30 days. After this trial period, Elementi will automatically ask whether you want to subscribe to an Update Plan to keep using the newer version; of course, you can choose to downgrade Elementi to the previous version.
When can I subscribe?
The initial Update Plan can be extended at any time from Cockpit for additional years, during which you can uninterruptedly benefit of free-of-charge update to any product version that SpinetiX is making commercially available to its customers during the contracted subscription period - this is a premium service, nevertheless, the fee to pay is much lower than purchasing a new license.
Note that the extension of the Update Plan associated with a license always starts from the end of the previous plan validity, regardless of the date of purchase. This means that if the request is done more than one year after the previous subscription ended, you need to purchase an Update Plan extension for at least two years, to buy-back the period you missed.