The Xbox team is working around the clock to polish up the Xbox One Summer Update which shipped a few weeks ago. Multiple small builds have hit in recent weeks, primarily focusing on bug fixes and improvements.
As usual, go to Settings, System, and then Console Info & Updates to check if the latest preview build has become available.
Here are the details from the Xbox Preview Forum:
DETAILS
OS version released: rs1_xbox_rel_1608.160830-2138
Available: 6:00PM PDT 9/1 (1:00 AM GMT 2/9)
FIXES
Xbox Universal Store
- Miscellaneous optimizations and improvements.
We're still waiting for the big update that will bring Looking for Group, Clubs, and Arena to the Xbox One, improving the social aspects of the console. Hit the link below for more information on that, and stay tuned for all the latest updates from the preview.
Everything you need to know about Xbox's Looking for Group, Clubs and Arena
