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 you have been selected to receive the update and your console hasn’t downloaded and installed the update by 1:00 AM PDT 7/3/2017, you will be prompted to do so at that time.

DETAILS
OS version released: rs2_release_xbox_1706.170629-1708
Available: 2:00PM PDT 7/1 (9:00PM GMT 1/7)

FIXES:

• Games & Apps
  
  • Resolved an issue which could sometimes cause Fallout Shelter to crash.
  • Fixed an issue which could sometimes cause games to crash to the dashboard during use.
  
  
• Accessories
  
  • Controller firmware update (stability fixes) available for Xbox One S controllers with Bluetooth. Please update your controllers and give us your feedback.

Source: July 1st: New Preview Beta and Preview Ring 3 build available (1706.170629-1708) - Xbox forums

Posted By: Brink
02 Jul 2017