New York Comic Con is later this week, and CD Projekt Red has released a teaser trailer announcing it will be there to announce something with Dark Horse Comics. All the company has said is that it's going be for the fantasy genre. It's safe to assume from this info that the collaboration is going to be for a comic based on The Witcher.
I am a fan of the books that are out in English, so I am super excited to get more lore from the awesome world surrounding Geralt. Of course, if you are a true fan you'll go watch the Polish mini-series. I dare you to find it.