So I found an article on Gamepur saying that the review embargo was ending on November 9th, according to a "trusted source", who also said early reviewers are getting their copies now. I'm not sure how legit it is (given the vaguely low quality of the website and article), but it's not entirely a ridiculous timeline, if annoyingly late at a day before release.

The 9th sounds fairly reasonable, although I wouldn't be surprised if it was not until the 10th, to avoid spoilers.

A review doesn't necessarily entail spoilers, depending on the nature of the reviewers and the terms of the contract. I wouldn't be surprised to start, at the least, seeing some numerical ratings and general feedback from some major reviewers, just without any gameplay footage or the like. By that point preloads will be available and it'll be the last chance for people to nab a lot of the "preorder" bonuses, so it makes sense to try and have headlines of things like "IGN gives it a 9/10!" or whatever to push those last minute pre-release sales.

The only preorder bonus I saw was the perk poster. Is there more?

Best Buy has socks, Steam has a DOTA announcer pack, Xbox One has a free copy of FO3, and there's a bunch of assorted bundles from different places that are probably limited run.

Well I guess I'll be getting those socks since I preordered from Best Buy. Surprised they would go through the effort considering they're the EA of electronics outlets.