New macOS Sierra 10.12.1 betas available to developers & public
Apple is continuing apace with beta release, and has made new macOS 10.12.1 betas available to developers and anyone in the public Beta Software Program. [Updated with public beta launch info]
The new build is 16B2333a, and can be downloaded either through the Mac App Store's Updates tab or Apple's website. Sierra now includes support for the iOS 10.1 beta's "Depth Effect" feature in the Photos app.
Apple has not identified any particular focus for testers, nor has it identified any new bugfixes.