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Releasing APIs before they're fully stable
The Angular team may occasionally seek to release a feature or API without immediately including this API in Angular's normal support and deprecation category. You can use one of two labels on such APIs: Developer Preview and Experimental. APIs tagged this way are not subject to Angular's breaking change and deprecation policy.
Use the sections below to decide whether a pre-stable tag makes sense.
Developer Preview
Use "Developer Preview" when:
- The team has relatively high confidence the API will ship as stable.
- The team needs additional community feedback before fully committing to an exact API shape.
- The API may undergo only minor, superficial changes. This can include changes like renaming or reordering parameters, but should not include significant conceptual or structural changes.
Experimental
Use "Experimental" when:
- The team has low-to-medium confidence that the API should exist at all.
- The team needs additional community feedback before deciding to move forward with the API at all.
- The API may undergo significant conceptual or structural changes.
- The API relies on a not-yet-standardized platform feature.