Out of the Sandbox's Shopify Theme Updater app is an exclusive tool developed and maintained by Out of the Sandbox.
View our full list of Theme Updater FAQs here.
We always recommend previewing the newest theme version in your site and testing that everything still works! Also note that if any new features were added between the older and current version of the theme, these will need to be set up on the theme copy but will carry over on future updates.
To preview the theme without publishing it, simply go to Sales Channels > Online Store > Themes and click the “Actions” icon next to the theme you’d like to preview.