User blog comment:Trandra/N7 Day 2016/@comment-4953843-20161103174931/@comment-4618888-20161104175304

The facts that 1) the Reapers didn't find this ark project and 2) the Shadow Broker(s) saw neither hide nor hair of it imply to me that this project was started post-ME3.

The trailer says, "600 years from where we stand," but Mike Gamble was quite cagey about when the 600 year count starts.