Microsoft has released a new update for the Xbox App on Windows 10 that, among other editions, adds support for streaming 1080p/60fps from Xbox One onto PCs running Windows 10.
The change to streaming quality can be done very easily. On the Xbox App, simply go to Settings > Game Streaming, and there you will be able to adjust your pixels and frame-rate. Microsoft has warned users that this is a bandwidth-heavy process, and a direct-wired connection is recommended for best results. Wireless can work, but you will need a strong network.
Other updates included from Microsoft include, Right clicking on friends to send messages or invites, enabling or disabling notifications, and comparing achievements with friends. You can see the full list of patch notes as well as a explanation video by clicking on the link here.