Are 'updating' and 'downloading & installing' Desktop Editors the same?

When there is a new Desktop Editors release, does one just download it as if downloading Desktop Editors for the first time, or is there an actual ‘update’ shortcut that can be used that updates only features that have been changed from the prior version?

– e.g., to update v.8.2 of Desktop Editors to v.8.3

Thanks.