Starting at 2:00 p.m. PST today, members of the Xbox One Preview Alpha and Preview Beta Rings will begin receiving the latest 1904 Xbox One system update (19H1_RELEASE_XBOX_DEV_1904\18362.2000.190319-1920). Read on for more about the new features, fixes and known issues in the latest 1904 system update.

DETAILS:
  • OS version released: 19H1_RELEASE_XBOX_DEV_1904\18362.2000.190319-1920
  • Available: 2:00PM PDT 3/21/19
  • Mandatory Date/Time: 3:00 AM PDT 3/22/19

New Features:

A complete feature list for 1904 is published here New Features Rolling Out to Xbox Insiders This Spring - Xbox Wire

New Power center Layout: Based on end user feedback we are flighting a variation today on the layout of the Power center.

Fixes:

Audio
  • We have fixes in this build to address no audio in shell, games and apps.

Home
  • Fixes to address Home crashing.

System
  • Based on end user feedback we have changed the order of the Action tiles in Power center for Report a Problem, Restart consoles etc.
  • Localization fixes.

Known Issues:

Audio
  • We are aware of issues of No Audio heard from Non-Spatial Audio games when using Dolby Atmos for Home Theater with the LG SJ9 soundbar.

Game Pass Mobile App
  • Issue/Impact After pushing a remote installation of a game from the Game Pass mobile app, customers will not see progress of the installation on in the mobile app and may not receive install notifications. The game will still successfully install if there is sufficient available space on the console.
  • Affected audience must be in 1904 preview, must be a GP subscriber, must be using the GP mobile app, must be pushing game installations from the app.
  • Workarounds None. A fix is coming in the next version of the mobile app in March. Customers interested in getting early access to the fix can download the Game Pass Beta app.

Home
  • We are aware that the clock/time is missing from home and the dashboard.

Messaging
  • We are aware users with the new Xbox Live messaging framework In Preview Alpha and Beta are not seeing all messages January 2019 and before on Xbox One consoles. We are working to mitigate this issue before GA. Workaround: You are able to access all your messages on the PC Xbox App or on Xbox | Official Site

My Games and Apps
  • We are tracking an issue with the Assassins Creed Enzio Collection loading to a black screen Workaround Launch the title then navigate back to guide and home via pressing the Xbox Jewell on the controller then navigate back to the game and it will progress past the launch screen so you can play.

Profile Color
  • Sometimes users may encounter the incorrect Profile color when powering on the console.

Virtual Keyboard
  • On Screen Keyboard in Hebrew We are aware that the onscreen keyboard in Hebrew the period or semi-colon no longer works. Workaround: A physical usb keyboard works


Source: March 21st : New Preview Alpha and Preview Beta 1904 Update (1904.190319-1920) - Xbox Wire