The first teaser trailer for Cyberpunk 2077 also included a secret message about The Witcher 3.  These secret message was uncovered by the eagle eyes at NeoGAF.

 "We are about to reveal our other project which is much closer to being completed, and it will also be a fully open world game with an intense story,” read the message. "You can probably guess the game we're talking about. On the 5th February, it will all be clear."

CD Projekt Red has confirmed that it is working on two major project right now, one releasing in 2014 and the other releasing 2015.  While the company has not formally announced The Witcher 3, everyone expects that they will continue their popular fantasy RPG series.