The changelog will soon be updated with the following information:
Power BI Report Server
Version: 1.12.7936.39665 (Build 15.0.1107.146), Released: September 27, 2021
Updated support for Power BI Reports including those with small multiples.
Updated Power BI Report Server portal experience as default experience.
Deprecated support for Internet Explorer.
Power BI Desktop (optimized for Power BI Report Server)
Version: 2.97.863.0 (September 2021), Released: September 27, 2021
Contains changes required for connection with Power BI Report Server (September 2021).
Updated gallery view for custom visuals.
I wanted to take this opportunity to highlight a few things.
Internet Explorer supported has ended in this release and will no longer function going forward. Users who connect to the portal with IE will see an error screen stating that a different browser is required.
Previsouly referred to as the new Portal experience preview (aka Portal2) is now the default experience after installation. Portal2 has a new theme and slightly different user experiences in some areas of the product. Currently it is possible to revert to the previous Portal UI but this will the final release with this fallback option. To revert try change the setting "UsePortalV2" to "False" in the ConfigurationInfo table of the catalog for your Reportserver.
As always if you you do encounter an issue please contact support and/or create a new thread with as much detail as possible and tag me and I will try to reply as quickly as possible.