Revolution R renamed Microsoft R, available free to developers and students
Since Microsoft acquired Revolution Analytics, there have been a steady stream of updates to Revolution R Open and Revolution R Enterprise (not to mention integration of R with SQL Server, PowerBI, Azure and Cortana Analytics).
Revolution R Enterprise, the big-data capable R distribution for servers, Hadoop clusters, and data warehouses has been updated for its new release, Microsoft R Server 2016.
Microsoft R Server provides a number of inherently parallel, distributed algorithms for statistical analysis and machine learning. These include a high performance implementations of Generalized Linear Models, K-means clustering, the Naïve Bayes classifier, decision trees, random forests and much more.
http://blog.revolutionanalytics.com/2016/01/microsoft-r-open.html
http://blog.revolutionanalytics.com/2016/01/r-dreamspark.html