You can now leverage two new app extensions to securely surface your app’s functionality on a merchant's store:
App sections empower you to create new content sections that can be added, removed and configured right from the new online store editor
App snippets help safely inject liquid code into a merchant’s online storefront.
You can learn more about creating both types of online store app extensions in our Help Centre.
This developer preview is being released as part of our new online store design experience partner beta. By participating in this beta you will be able to explore and test a number of new theming features, provide feedback and prepare and update your own custom themes with the new sections architecture.
For any questions regarding the online store design experience partner beta visit our dedicated forum.