Re: PS Plus - I don't understand why Sony couldn't make this clear in the blog post. There, it states that it's "free for all players" (which I would take to mean literally all PS4 owners), and PS Plus members will get some bonus DLC pack thing.
Then, contrary to that, there's that Warzone ad floating around stating that PS Plus is required.
The only place I've seen it "confirmed" that PS Plus isn't required is that CharlieIntel twitter account (I've no idea how reputable that is), and then a lot of gaming news outlets using that as their source. I guess we'll find out later today, I just don't see why it's not explicitly stated in any official communication. I could speculate, optimistically, that Sony are reluctant to state that PS Plus isn't required for a bound-to-be-popular game, because they obviously want to constantly encourage people to subscribe.