You seem to be under the impression you are talking to Splunk. That is not the case. While Splunk employees sometimes contribute to these discussions, this forum is mainly populated by fellow Splunk users.
The Microsoft Office 365 Reporting Add-on for Splunk app is not supported. That means an update may never come.
Splunk rarely publishes roadmaps and never publishes details ahead of the release of a product.
--- If this reply helps you, Karma would be appreciated.