I'm as hyped as everyone else who followed the development of the game so far, but:
He said review, singular... could this possibly mean some shady exclusive review deal with one of the bigger sites?
That is due to automated Chrome translation. Translate tools are not that good with Polish language. The line should be translated like this:
He added that first reviews of the Witcher 3 are expected to arrive in the week before the game is released.