This setting supposes to enrich your Assistant experience when your screen is locked. It can use Voice Match to give you access to the calendar, email, and other apps. It can display tips on the lock screen as well.
The feature should be available to all Android users already.
Google Assistant – Get things done, hands-free – Apps on Google Play
Get the Google Assistant for hands-free help Your Google Assistant is ready to help when and where you need it. Manage your schedule, get help with everyday tasks, control smart-home devices, enjoy your entertainment and much more. Just start with: “Hey Google” Play music and videos with your voi…
Via Google Blog
Your Android is now even safer — and 5 other new features
Highlighting the latest Google updates that will make Android phones more secure and convenient for everyone.
Hideaki Oshima
