Apple iOS 10.1 beta adds the Portrait Camera mode for the iPhone 7 Plus
Right now, iOS 10.1 beta is available only for developers. That will change on Friday, when the iOS 10.1 beta is made available to the public. The depth of field feature will work with people only, and requires the subject to be within 8-feet away from the phone. Too far away, and a message will tell you to move the subject within 8-feet of the handset. If the subject is too close, you'll get a message telling you to move farther away.
Other things on the changelist include a fix for motion handling, and developers will be able to access barometric pressure readings for the Apple iPad Air 2, Apple iPad mini 4 and the Apple iPad Pro. Also available for developers today is the first beta update for WatchOS 3. That would be WatchOS 3.1 beta.
source: TechCrunch via 9to5Mac