MacOS 10.12 Sierra (Public Beta)
Apple today previewed macOS Sierra, a major update to the world’s most advanced desktop operating system, with new features that make the Mac smarter and more helpful than ever. Siri is now on the Mac with brand-new capabilities to help with the things users do every day on their desktop. With Siri, users can look up information, find documents, pin or drag and drop search results, and even adjust system preferences.