macOS Sierra Features: Siri
As expected, Siri is now integrated with the macOS.
There are three ways to open Siri. First, you can open Siri from its icon on the dock. Second, you can also start talking to Siri by clicking on the round Siri icon on the menu bar that is located between the icons of Spotlight Search and Notification Panel or you can simply assign keys for Siri.
Even though it is the regular Siri, it is improved compared to the one on iOS. Now, it sounds more natural and more importantly, it works great with macOS. For example, when you ask for pictures of the iPhone 6S, it will show them. However, you can drag and drop the picture that you want into any app. Also, you can add the Siri card to the Notification Panel.