Software updates are made available for download from the Stormdance web site. Often there is a facility to check for new releases from within the software.
Minor updates (e.g. version 2.5 2.6 2.7 etc.) are FREE for existing customers.
There may be a charge for major releases (e.g. upgrading from version 2.x to 3.x)
If there is a major release of the software within 6 months of purchase, then you get the new version for free!