https://www.techradar.com/news/microsoft-xcloud-game-streaming

While Microsoft’s game-streaming service isn’t ready for primetime yet, it’s further along than anyone thought: Project xCloud, which is currently being beta tested by Microsoft employees, can already stream 3,500 games from the cloud with another 1,900 games potentially titles on their way. 

Microsoft unveiled these and other key details today in a new blog on the Xbox Wire, and says even more details will be revealed soon.