https://www.youtube.com/watch?v=P99qJGrPNLs
The trailer has a secret message for fans, in which they talk about the game, then tease a new game (98% chance it's TW3) that's "closer to release" and also open world. It'll be the first time the Witcher will have an open world game.
Oh, and people have already, as of like nine o'clock yesterday evening, said this trailer is wildly sexist, so, hooray for that.