Sometimes we release features that are still, strictly speaking, in beta. It allows our platform development team to get feedback on new functionality in real-world environments.
Beta Features
Beta features are clearly marked with the

We generally use the beta release process to add new functions or parameters to our APIs. If you are using one, use the feedback form linked to at the bottom of every page to let us know what you think.
Stable Release
Once we're happy with a feature the beta icon is removed. You can then use it with confidence, knowing we're supporting it from that point on.
Keeping Up To Date
Our Release Notes include a list of any new beta releases and highlight when a beta feature moves to stable release (and if any changes have been made).