Annotation Type Incubating
Incubating features are still under active development. The usual compatibility policy does not apply: the contract of incubating elements (e.g. types, methods etc.) may be altered in a backward-incompatible way -- or even removed -- in subsequent releases.
You are encouraged to use incubating features so the development team can get feedback and improve them, but you should be prepared to update code which relies on them as needed.
- Gunnar Morling