Hey everyone - Does anyone know if Sierra will support the "hey siri" command to get Siri's attention? I noticed on the WWDC video that they never said anything about this. (So I am thinking no?) Also, if it does support "hey siri", how does it work if you have other apple devices in the room? Say, for instance, you have your iMac, iPhone, watch, iPad, and Macbook in the room. Which one will respond? Or all of them?