I don't consider Until Dawn or Detroit linear, because each of them have lots of branching storylines, depending on the choices you make. Also, I don't think Until Dawn had a AAA budget.
God of War will be fairly linear, although less so than previous versions, from what I've heard. What is noteworthy there is that they've said it runs 25 to 35 hours -- more than twice the length of the typical 8 to 15 hour SP campaigns that were so prevalent a generation ago. So GoW, too, is adapting.
I disagree that Until Dawn wasn't AAA. It had real actors and graphically it holds up even now.