Apple has released the first beta versions of iOS 10.1 (build 14B55c), macOS Sierra 10.12.1 (build 16B2327e), watchOS 3.1, and tvOS 10.0.1.
These beta builds will likely focus on bug fixes, feature refinements, and improvements to issues found with the just released iOS 10, macOS Sierra 10.12, WatchOS 3.0, and tvOS 10.0 versions of system software for the entire Apple product line.
iOS 10.1 beta 1 includes an iPhone 7 Plus specific feature for taking images in bokeh “Portrait” photography mode, a feature which was mentioned in the iPhone 7 keynote but not released initially. Aside from that, no major new features are expected in the beta releases.
Beta testers can find the new builds available now from the respective Developer Centers, or through the Software Update mechanism on a device that has a beta profile installed.
The beta builds are available immediately to users in the developer testing program and will probably follow to public beta users soon after.
Additionally, a developer beta of Xcode 8.1 is also available to download.