Some time ago, Microsoft enabled the ability to stream Xbox One games to Windows 10 PCs. However, it looks like Microsoft is also working on the reverse as hinted in the latest Xbox Rewards survey.

This honestly will not be what you think it is Vasto. I truly do not see a way to get steam, blizzard, etc games to map correctly to the XB1. This will only be "Windows 10" games.

I think this refers to Windows 10 games and apps coming to X1. Either way, I'm all for it.

This feature I likely won't use but hey, the more the merrier!

I doubt that. Microsoft would get bad publicity if they limit it to the few good games available in the Windows Store and don't allow it at least for Steam games.

Additionally Microsoft has a lot competition in the home streaming business (from PC to devices connected to TVs or from PC to tablets/smartphones/notebook)... Steam In-Home-Streaming, Steam Link, Nvidia GameStream, Splashtop, VNC Viewer, Moonlight Game Streaming (Limelight). With so many competitors they will be forced to offer as much value to their own streaming service as they can to keep their customers (Xbox One + Windows10-PC) happy.

I want W10 apps on my one, especially some of the great emulators :).

Would be cool. Probably wouldn't use it though, if the games lack Achievements

Why would steam devalue the steambox? 

How would MS properly match the xb1 streaming to any random executeable? Even if its an rdp session locked to a given window.... theres so many flaws....

I honestly can't see it working out entirely the way some think it will like Streaming absolutely ever PC game under the sun, it's most likely going to be a select few out of the thousands of games, especially less taxing games that have a better chance of being streamed vs those that require high end hw. This in combination with X1's already weakish hw means there won't be massive results for those with potato laptops that stream to the console.

Also I'm not fond of the idea of them getting some games to stream from Steam if they aren't also going to release their games onto the store, they claimed they aren't competing with Steam so if they want to Stream from Steam then you really have to co-exist with it, not compete against it, otherwise they'll have to rely on streaming from their own Windows store.

Microsoft doesn't need Valve's/EA's/Ubisoft's/Blizzard's/GOG's... permission to stream Windows games, no matter if these Windows games are started with the Steam client, Origin client, U-Play client, GOG Galaxy client, DRM-free download games or retail games from discs.

The streaming client has to support full screen and direct-input-commands for game controllers, then most windows games of the last decade should run fine on the Xbox One with its gamepad. Steam games also run with Nvidia GameStream or Moonshine/Limelight... game streaming is no rocket science.