Well it seems the job opportunity got taken down, and they didn't mention multiplayer in any of their interviews. Looks like they changed their mind.
I hope they did. Actually the chances are good that CDP listens closely to fan-feedback (which was, on the whole, not enthusiastic about MP, I think). So let's trust them and hope for the best.
Well, to be honest, I like the Mass Effect 3 multiplayer, but I don't think it would work The Witcher (not even the same coop gamestyle), so I think it's better that they stayed on the singleplayer only path.