Found in both the Xbox (beta) and regular Xbox apps, when you view game information on titles you own within the app and while connected to your console, there's a mysterious "Play from console" option present with the streaming logo.

It doesn't actually work right now, and we've verified ourselves that this is the case. You'll see the streaming bar appear at the top of the screen, but nothing else happens. It'll error out with some kind of message that says you can't do this right now.

Streaming to Windows 10 Mobile should be made easier by the recent announcement from Build that phones will be able to use the Xbox One controller. It'd also be another killer feature to add to the mobile operating system, and one a number of folks are surely interested in.

http://www.windowscentral.com/xbox-app-windows-10-mobile-hints-console-game-streaming-feature

great, good feature. hope for ios and android too

Its happening

Console game streaming to mobile devices is coming. I keep telling people the NX will feature this in a big way. Microsoft is ready to complete with Nintendo on this front and Sony already has console games streaming to Vita.

But when streaming to a touch screen mobile device a controller is needed and it looks like Microsoft has this covered too.

First your console games will stream to your phone and tablets and you will play with a bluetooth controller. Next your phone and tablets WILL be the console and then you will stream to your TV. It's coming.