In the past, you've already been able to create All Quiet incidents by 

 Linear issues matching certain criteria.

Now, you can also create All Quiet incidents by 

This is great if you want to e.g. create an incident after checking an existing Linear issue in Triage. You can simply add a label like "Incident" to your Linear. If it matches the criteria, we'll create an All Quiet incident and inform your on-call team about it.

Of course, incidents created by updating Linear issues also support the synchronization of All Quiet and Linear states.

https://docs.allquiet.app/integrations/outbound/linear#create-all-quiet-incidents-from-linear

All Quiet changelog

Linear Inbound Integration | Create All Quiet incidents by updating Linear issues