The review queues and question closure will not be a part of the initial release, but will be included in the scope of the overall redesign and will be incorporated as the beta graduates to general availability.

I'll believe that when I see it. The cynical view on this is it looks like yet another case of pushing half-baked features live, and then not fixing them later. For example we still can't flip questions from the new bad opinion-based format to standard Q&A with answers + comments.

(In the opinion-based format, everything is an answer that bumps the question, even replies that would obviously be comments. But you don't get any notifications for upvotes on your answers so you don't know when it's getting any attention. And of course for long-term it's hard to find real answers in a sea of discussion, for questions that are real questions, not invitations to discussion. But the only selection that results in a normal question is "troubleshooting/debugging", because the people that built it claim they didn't realize that wasn't the only kind of on-topic question on the old SO. And still haven't even changed that part of the ask UI. It's been broken for several months now, making most of the interesting (non-debugging) questions use this bad format that's not good for technical questions which do have real answers. This kind of active hostility to the library of questions and answers is inexcusable. So I have zero trust that any future changes are actually well-intentioned and aren't instead going to be yet another way to degrade the site.)