The Witcher was really something else. We know that this will be the last of the series and that the Blood and Wine DLC will be the end of it all but some of us are still hoping that CD Projekt Red would revisit the Witcher universe in the future.
While CD Projekt Red did not say that it is not going to happen, they did announce that they are currently not working on any Witcher game. in fact, they are not even planning to work on one which suggest that even if they do decide to revisit the Witcher universe, it will be in the far future.
According to Marcon Iwinski, the Co-Founder of CD Projekt Red, the Blood and Wine DLC is the end and there won’t be any Witcher for a long time. Since they do not know what the future is like for the company, even they do not know if there will be another Witcher.
The Blood and Wine expansion will be released on the 31st of May 2016.