So the process would be:
When NDA ends, it unlocks and reviewers can finally open the box, install chip, set up the system anew with Windows, update drivers, run all their benchmarks, many of which take hours... once all that's done then they post the review on Friday or Saturday. No blanking period for technical difficulties on the innumerable mobo-RAM-SSD-GPU combos reviewers are using.
Or:
AMD gave them the chips weeks ago, and have told them that they are tracing each chip and are going to viciously pursue legal action against anyone who violates the NDA. You may not run any publicly reported benchmarks until the NDA ends; that list includes but is not limited to x, y, z. Set up the system, run your benchmarks, get it as perfect as you can over the next couple of weeks. If you have any issues here's our direct number for rapid 24/7 support. Thank you.