Sep 01, 2017 - 08:11 AM
When you purchase a perpetual license, you will receive minor updates at no charge. Major updates are a fee.
Sep 01, 2017 - 08:19 AM
V-Ray for Revit was just released this year so we do not know yet what upgrades fees there will be in the future. When you rent the license, you are entitled to the latest version available during the rental term.