upgrade to 10.12 for installation.
macOS Sierra Features
Siri's Launch
9to5Mac, the well-informed Apple news center, leaks that Siri will be eventually pinned on
macOS Sierra menu bar following over 3 years testing. Inheriting functions from Siri for iOS,
Siri for macOS Sierra empowers users to search on web, check notifications, appointments,
weather, launch apps, play music/video and more by voice commands. 9to5Mac describes
design of Siri as this: "a dark, transparent interface featuring colorful sound waves to
indicate speech input". But it's only for the testing version and some changes may be made
before debut of this macOS Sierra headline feature in summer.
Photos App Enhancements
Another rumor coming from the Japanese site Mac Otakara suggests that great
improvements will be shown on photos app for macOS Sierra. Instead of exact info of new
features, tools for EXIF information editing, touch-based brushes used for brightening and
adjusting parameters for specific parts of a photo, are most likely to integrate into photos
app according to Mac Otakara. In addition, Aperture-level functions are seemingly missing
in those enhancements for photos app on macOS Sierra.