Microsoft has released a new update for Xbox One today, which adds no user-facing features.
However, Major Nelson has confirmed that the update will prepare the system for Windows 10 game streaming when the operating system launches later this month. In addition, the update will ready the console for the rollout of backward compatibility to all users later this year.
"Later today Xbox One owners will be getting a system update," Nelson explained. "This update prepares for game streaming to Windows 10 (launching July 29th) and our upcoming Backward Compatibility feature launching in a few months. There are no new user-facing features in this release as the team focuses on the New Xbox One Experience that will be available later this year."
Backward compatibility is currently available for those in the Xbox One preview program and is limited in scope at present, 100 games will be supported when the feature is rolled out widely. DLC, achievements, and multiplayer are all supported by backward compatibility, so long as it's approved by the game's publisher.
The Xbox One will be gettign a major UI overhaul this autumn.