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# Magento_ReleaseNotification module
This module serves to provide a notification delivery platform for displaying new features of a Magento installation or upgrade as well as any other required release notifications.
## Installation
The Magento_ReleaseNotification module creates the `release_notification_viewer_log` table in the database.
All database schema changes made by this module are rolled back when the module gets disabled and setup:upgrade command is run.
For information about a module installation in Magento 2, see [Enable or disable modules](https://devdocs.magento.com/guides/v2.4/install-gde/install/cli/install-cli-subcommands-enable.html).
## Extensibility
Extension developers can interact with the Magento_ReleaseNotification module. For more information about the Magento extension mechanism, see [Magento plug-ins](https://devdocs.magento.com/guides/v2.4/extension-dev-guide/plugins.html).
[The Magento dependency injection mechanism](https://devdocs.magento.com/guides/v2.4/extension-dev-guide/depend-inj.html) enables you to override the functionality of the Magento_ReleaseNotification module.
### UI components
You can extend release notification updates using the configuration files located in the `view/adminhtml/ui_component` directory:
- `release_notification`
For information about a UI component in Magento 2, see [Overview of UI components](http://devdocs.magento.com/guides/v2.4/ui_comp_guide/bk-ui_comps.html).
## Additional information
### Purpose and Content
* Provides a method of notifying administrators of changes, features, and functionality being introduced in a Magento release.
* Displays a modal containing a high level overview of the features included in the installed or upgraded release of Magento upon the initial login of each administrator into the Admin Panel for a given Magento version.
* The modal is enabled with pagination functionality to allow for easy navigation between each modal page.
* Each modal page includes detailed information about a highlighted feature of the Magento release or other notification.
* Release Notification modal content is determined and provided by Magento Marketing.
### Content Retrieval
Release notification content is maintained by Magento for each Magento version, edition, and locale. To retrieve the content, a response is returned from a request with the following parameters:
* **version** = The Magento version that the client has installed (ex. 2.4.0).
* **edition** = The Magento edition that the client has installed (ex. Community).
* **locale** = The chosen locale of the admin user (ex. en_US).
The module will make three attempts to retrieve content for the parameters in the order listed:
1. Version/Edition/Locale
2. Version/Edition/en_US (default locale)
3. Version (default file for a Magento version)
If there is no content to be retrieved after these requests, the release notification modal will not be displayed to the admin user.
### Content Guidelines
The modal system in the ReleaseNotification module can have up to four modal pages. The admin user can navigate between pages using the "< Prev" and "Next >" buttons at the bottom of the modal. The last modal page will have a "Done" button that will close the modal and record that the admin user has seen the notification.
Each modal page can have the following optional content:
* Main Content
* Title
* URL to the image to be displayed alongside the title
* Text body
* Bullet point list
* Sub Headings (highlighted overviews of the content to be detailed on subsequent modal pages) - one to three Sub Headings may be displayed
* Sub heading title
* URL to the image to be display before the sub heading title
* Sub heading content
* Footer
* Footer content text
The Sub Heading section is ideally used on the first modal page as a way to describe one to three highlighted features that will be presented in greater detail on the following modal pages. It is recommended to use the Main Content -> Text Body and Bullet Point lists as the paragraph and list content displayed on a highlighted feature's detail modal page.
A clickable link to internal or external content in any text field will be created by using the following format and opened in a new browser tab. Providing the URL for the link followed by the text to be displayed for that link in brackets will cause a clickable link to be created. The text between the brackets [text] will be the text that the clickable link shows.
#### Link Format Example:
The text: `https://devdocs.magento.com/ [Magento DevDocs].` will appear as [Magento DevDocs](https://devdocs.magento.com/).