The best way to record feature requests for the hashicorp/azurerm provider is to open issues in the provider’s GitHub repository, since that’s where the provider is developed and where changes are planned. Although there are some HashiCorp employees participating in this forum, most of the folks here are members of the Terraform community and so can’t address roadmap questions like this. (And even though I work at HashiCorp, I don’t work on the Azure provider so I don’t know the answer to this question either.)
I don’t know Azure very well so I’m not sure if this is correct, but based on some keyword matching it seems like this existing issue might be a request for what this topic was asking about:
If that seems to be what you are looking for then I suggest subscribing to that issue to be notified when there are updates.