With the Witcher in full-scale production at the moment, insiders that are working along Justice League star, Henry Cavill have leaked some information regarding future seasons for the upcoming show.
The rumor is sourced by known DCEU insider, KC Walsh of Geeks WorldWide. Walsh has quite the track record for leaking information about upcoming TV shows and movies and the information that he has managed to gather for the 'Witcher' TV show is about how Netflix is overall feeling about its current production rate and quality.
According to Walsh, Netflix is reportedly "very happy with the Witcher and we could see multiple seasons greenlit before season one airs or shortly after." Walsh continues to explain that if Netflix does this then Henry Cavills schedule would be quite full for awhile, which in turn could take away from the potential of Cavill making a return as Superman. As you would expect, this is just a rumor so please take it with a grain of salt.
For more information regarding the coming 'Witcher' show, check out the actors who have been confirmed for Ciri and Yennefer here. If you want to see a full reveal of Henry Cavill as Geralt, check out a video here.