Starting at 6:00 p.m. PDT today, members of the Xbox One Preview Alpha Ring will begin receiving the latest Xbox One system update (1806.180528-1920). Read on for more about the features, fixes and known issues in the latest 1806 system update.

New Features:

Additional Accessibility Options – New Narrator languages
  • Users can now enable the new Narrator languages: Spanish (es-MX, es-AR, es-CO, es-CL), English (en-AU), Portuguese (pt-BR), Polish (pl), Swedish (sv-SE), and Dutch (nl-NL, nl-NB).

Fixes:

Audio/Video
  • Fixes for some Video apps such as the NBC app to fix audio/video sync issues.

Localization
  • Various localization issues fixed in this build.

System Performance
  • Misc. performance fixes in the platform.

Known Issues:

Groups
  • Enabling Groups after taking the update: Groups may not appear for you on first sign in unless you do a full console reboot after taking the system update. This is being fixed in an upcoming build and should only affect having just taken this system update.
  • The Groups tab in My games & apps may not show after sign in even though you can access Groups in Guide, or you may see “This group does not exist” on Home on first sign-in for your existing Groups. Workaround: Sign in / out to refresh these pages.
  • Some changes might not be reflected when editing Groups between multiple consoles after coming out of connected standby. Sign in/out to fix.
  • Adding the Rewards app to Groups causes you to be unable to access your Groups. This is fixed for an upcoming build.
  • Using special characters in Group names (e.g. &,”) causes issues during Group creation or using the “Add more” flow. Note: emojis are fine. This is being fixed in an upcoming build.
  • You may see issues with Groups if you frequently switch between your non-Preview console and your Preview console. Workaround: Reset your Groups locally on the Preview console through “My games & apps” > Groups, then using the “Reset groups” button at the bottom of the page to resync from the service.

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

Networking
  • Work continues on the stability of the Wi-Fi connectivity. If you see any issues please report the problems for investigation.

YouTube
  • Some users are encountering an issue where their YouTube account is being signed out whenever they launch the app.
    • Workaround: Uninstall/re-install the app and sign in with your account again.


Source: New Preview Alpha 1806 System Update - 5/31/18 - Xbox Wire