What is the current state of on-premise hosting of Power BI reports?
During the PASS Summit in October Microsoft announced that they would be releasing a technical preview of on-premise hosting of Power BI reports through SSRS. The preview, which can be accessed through the Azure marketplace, allowed anyone to spin up a virtual machine that included an installed and configured version of SSRS with sample data/files so customers could start exploring the solution immediately. It is worth mentioning that the current preview is very raw and rough; for one it can only be accessed through the Azure Marketplace and hence cannot currently be installed on your own environment and second it only supports live connections to Analysis Services cubes.
What's to come with the next release?
The next technical preview is planned for January 2017 and unlike the current preview, you will be able to download and install it on your own virtual machine or server. Within this release, they plan to add support for mobile consumption, custom visuals and other data sources.
When will there be a production release?
Microsoft announced that it is planning to release the production ready version of SSRS on-premise hosting of Power BI files with the next release of SQL Server, explicitly adding that it will not be added into the SQL Server 2016 product. Interestingly, this implies that we could expect the next version of SQL Server mid-2017.