While you can update your installation of Altium Designer to the next primary (or secondary) point release within the same major version stream, some versions will not allow you to update from the previous major version release to the next major version. Generally if you have Altium Designer x.0.1 installed, you can update to x.y.z, but you cannot update to x+1.y.z, where: x is the current major version. x+1 is the next major version. y is the current primary point release within the current major version stream. z is the current secondary point release within the current major version stream. So depending on the next version of the software you are considering, you have two choices: When an update is available within same major release stream, you can update your current installation, or install the new update as a separate instance, having both installed side-by-side, and using the version that best suits your needs. When the next major version is available, you have the choice to continue with your current version, or to install the next version to access the latest features. Alternatively, you can have both installed side-by-side, and use the version that best suits your needs. Some versions may offer radio check boxes for "New installation" or "Update existing version" that may offer a version from which you can update.