Microsoft will be rolling out the latest Xbox One Preview build later tonight. This appears to be a minor update to fix an install issue with universal apps.
The official Xbox forums have the info on this patch:
Update In addition, there should be a big improvement to Cortana's behavior as well. Microsoft's Zach Johnson explained the fix in a tweet:
If you are a member of the Xbox One Preview program, you can check to see if you can download the latest update by double-tapping the Xbox button, then go down to All Settings, select System, then Console System & Updates, and it will tell you if the update is available.
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