I would bet hard cash that it'll be out as of 10.17. Almost every major vendor is done, and the ones that aren't have a 2020 OKR (or equivalent) around this.

> more than 60 seconds, so you can’t dynamically page in large files anymore

certain vendors with legacy engines they've ported 10 years into the future are in trouble. But, assuming a 10.17 release, which they've worked out with apple? They'll be fine, mostly.