Windows 10's official launch is 10 days away, but anyone with a device running it and an Xbox One may start streaming games from the console beginning now.
Xbox One's last update on July 8 added support for the feature, which Microsoft turned on Friday. Any Windows 10 device, mobile included, can receive the stream from the console. The instructions for doing so are at the announcement.
The Xbox App on Windows 10 likewise will update several features with its July release, including a beta for party chat, the ability to share screen and video captures with friends through the Xbox Live activity feed (for Windows Store games) or store them (non-Windows Store), and a highly requested feature to take a picture of your avatar and use it as a gamerpic.
Microsoft announced support for streaming to Windows 10 devices back in January. Members of the Xbox Live Preview program got their hands on it a month ago during E3. Windows 10 will be a free upgrade for those running Windows 7 or 8.1.
For more on how streaming games from the console to a mobile device or PC works, see Polygon's preview from GDC 2015.