Apple has released macOS Sierra 10.12.1. It can be downloaded from the Software Update function in the Mac App Store. According to Apple, macOS Sierra 10.1.2:
° Adds an automatic smart album in Photos for Depth Effect images taken on iPhone 7 Plus ;
° Improves the compatibility of Microsoft Office when using iCloud Desktop and Documents;
° Fixes an issue that may prevent Mail from updating when using a Microsoft Exchange account ;
° Fixes an issue that caused text to sometimes paste incorrectly when using Universal Clipboard ;
° Improves reliability of Auto Unlock with Apple Watch;
° Improves security and stability in Safari.