# Google Cast Web Receiver SDK Preview URL

Developers can test new versions of the Web Receiver SDK prior to release
using the preview URL at

    <script src="https://www.gstatic.com/cast/sdk/libs/caf_receiver/preview/cast_receiver_framework.js"></script>

When testing, make sure to test using a non-production version of your web
receiver application.

> [!WARNING]
> **Warning:** The preview URL for the Cast Web Receiver SDK is intended for testing purposes ONLY and is not permitted to be used in production applications.

Updates to the preview URL will be made prior to planned new releases of the Web
Receiver SDK. Hotfix releases to address urgent issues will not be pushed for
preview. The preview lead times for the production release may vary and can
be affected by issues found during internal testing. The preview URL for an
upcoming release is expected to be generally available at least one week prior
to production release.

Developers are encouraged to subscribe to the
[cast-sdk-announcements@googlegroups.com](https://groups.google.com/g/cast-sdk-announcements) Google Group to get the
latest updates on the Cast SDK, including preview availability and release
updates.

Bugs should be promptly reported through the [Cast SDK Issue Tracker](https://issuetracker.google.com/issues/new?component=190205&template=814901) or
with your Nest Technical Account Manager.