is `az kusto` supported or not?

Look at the top note:

This module will not be supported starting January 1, 2021. Please execute "az extension add -n kusto" to install the supported Kusto extension.

Is it not the same module? are there two modules named kusto? if so where is the documentation of the supported one?

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#### Document Details

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* ID: 41f71b1e-7a13-664a-9382-a69931e566c1
* Version Independent ID: 7f44a1c2-c6a1-ead6-f286-cdf54bc6ec5c
* Content: [az kusto](https://docs.microsoft.com/en-us/cli/azure/kusto?view=azure-cli-latest)
* Content Source: [latest/docs-ref-autogen/kusto.yml](https://github.com/MicrosoftDocs/azure-docs-cli/blob/master/latest/docs-ref-autogen/kusto.yml)
* Service: **data-explorer**
* GitHub Login: @rloutlaw
* Microsoft Alias: **routlaw**