From the article:

Fixes Implemented

Thanks to the hard work of Xbox engineers, we are happy to announce the following fixes have been implemented for this build:

System

• Various updates to properly reflect local languages across the console.
  • Note: Users participating in Preview may see “odd” text across the console, for more information go here.

Known Issues

We understand some issues have been listed in previous Xbox Insider Release Notes. These items aren’t being ignored, but it will take Xbox engineers more time to find a solution.

Audio

• We have received reports of users experiencing intermittent issues with audio across the dashboard, games, and apps.
  • Note: If you experience issues with audio, please submit feedback via Report a Problem immediately with the “Reproduce with advanced diagnostics” option.
  • Select the category “Console experiences” then “Console Audio Output Issues” and include the following information:
    • When did the issue start? After a console update, reboot, resume, etc.
    • Did you lose audio just in the game/app or system audio as well?
    • Does changing the audio format resolve the issue? If yes, what was the format before and after?
    • Does rebooting resolve the issue?
    • What does your setup look like? Equipment, layout, etc.
    • And any additional information you can provide to reproduce the problem.

My Games & Apps

• Titles in collection may incorrectly appear with a “trial” tag.

TV/Display

• Some users have reported that the console is displaying at the incorrect resolution on boot. We are aware and investigating.
  • Note: If you encounter this behavior, please ensure that you submit feedback via Report a Problem immediately. Please include the make/model of you TV/Display in the description.
  • Workaround: Restarting the console via the Power Center (holding down the Xbox button > Restart console > Restart) should resolve the behavior. If not, ensure you are looking at the troubleshooting here, specifically the section about ensuring your TV firmware is up to date.

Make sure to use Report a problem to keep us informed of your issue. We may not be able to respond to everyone, but the data we’ll gather is crucial to finding a resolution.