"There’s always a meta-commentary to be had about the timing and execution of game reviews. If a review comes out a good ways before launch, such as the new Dragon Age game, it’s usually a sign of confidence. Strong reviews that far out can help boost pre-order numbers and lead to a larger launch at retail. A good, strong early review can have an appreciable effect on the business of launching a game.
The reviews for Assassin’s Creed Unity were held until noon, Eastern time today. The game will have been available to purchase for as long as a dozen hours before anyone could read whether it was good or bad, or if it suffers from technical problems."