HOW TO GET IT:
• If your console is in Instant-On mode and you have been selected to receive the update, it will download and install the update and reboot to standby.
• NOTE: Once the update is available to you, you can manually begin the update by launching the Guide and navigating to All Settings > System > Updates.
• If your console hasn’t downloaded and installed the update by 1:00 AM PST 11/12/2017 (9:00AM GMT 12/11), you will be prompted to do so at that time.
• NOTE: This update has a shorter than usual amount of time before it becomes mandatory.
OS version released: rs3_release_xbox_dev_1711.171110-1609
Available: 6:00PM PST 11/11 (10:00PM GMT 11/11)
Update: 3,4 GB
My Games and Apps
· Fixed an issue when installing an update for some games caused the entire game to re-install on completion.
· Fixed an issue with some Game Saves in which they did complete after previously playing offline.
· Fixed an issue in which Games on external HDD that are not registered on a new console that have updates do not show in the Updates section of collection.
· Fixed some graphical artifacts, textures, occlusion and compression for certain titles at the platform level.
· Implemented updates to the 4k video pipeline for Netflix and key partners to support 4k VP9 video playback
· Fixed an issue in which notifications for messaging/parties and sometimes achievements were not popping/displaying.
· Fixed the reliability of Network Transfer between consoles on your network. This resolves cases in which the source console could not be found, or installs start then failed.
· Fixed an issue in the HDD Profile backup feature that would fail when loading the users gamerpic.
· Various localization fixes to the shell UI and the accessories app.
· Fixed an issue in which Videos within the activity feed pages would often appear with black video playback.
· Fixed issues with Crackling audio for some users in Party Chat
· The left and right navigation for selecting date and time during Tournament creation is currently reversed when the console language is set to Arabic or Hebrew.
· Left and right navigation in Tournament twists is reversed when the console language is set to Arabic or Hebrew.
· Left and right navigation in the bracket view of Tournaments is reversed when the console language is set to Arabic or Hebrew.
Avatars on Home
· Users wishing to represent themselves as an avatar can do so by changing their settings under My profile > Customize profile > Show my avatar.
· Narrator can stop reading large amounts of text.
Quelle: Xbox Insider Forum