Release changes for the ability to send enable_categorical to DaskDMatrix

[bhavana3]

I am trying to use xgboost-dask 1.3.3 version and see that the enable_categorical feature support is not enable while making the call to xgb.dask.DaskDMatrix. I also identified changes are made to master and merged. As the release version wouldn't support this and blocks users, I wanted to understand when the release of these changes are planned?

[trivialfis]

Category data support is not in distributed training yet. As documented this parameter is experimental. See #6503 for progress.

In 1.4 (about to be released), the parameter is available in Dask DMatrix, but setting it to true will raise an error.

[bhavana3]

Thank you. Are the only supported dtypes are - int, float, bool for distributed training?

[trivialfis]

Yup. But basic support for distributed training should come soon. Stay tuned.