docs/content/graphql/overview/schema-previews.md

title	intro	redirect_from	versions
Schema previews	You can preview upcoming features and changes to the {% data variables.product.prodname_dotcom %} GraphQL schema before they are added to the {% data variables.product.prodname_dotcom %} GraphQL API.	[/v4/previews]	[{free-pro-team *} {enterprise-server *} {github-ae *}]

About schema previews

During the preview period, we may change some features based on developer feedback. If we do make changes, we'll announce them on the developer blog without advance notice.

To access a schema preview, you'll need to provide a custom media type in the Accept header for your requests. Feature documentation for each preview specifies which custom media type to provide.

{% note %}

Note: The GraphQL schema members under preview cannot be accessed via the Explorer at this time.

{% endnote %}

{% for preview in graphql.previewsForCurrentVersion %}

{{ preview.title }}

{{ preview.description }}

To toggle this preview and access the following schema members, you must provide a custom media type in the Accept header:

{{ preview.accept_header }}

Previewed schema members:

{% for schemaMemberPath in preview.toggled_on %}

• {{ schemaMemberPath }} {% endfor %}

{% if preview.announcement %} Announced: [{{ preview.announcement.date }}]({{ preview.announcement.url }}) {% endif %}

{% if preview.updates %} {% for update in preview.updates %} Updated: [{{ update.date }}]({{ update.url }}) {% endfor %} {% endif %}

{% endfor %}