Speaking in a blog post, CD Projekt RED co-founder Marcin Iwinski laid down the law regarding DRM for the Witcher 3 on the PC: they aren’t doing that.
“The PC version of The Witcher 3 will have absolutely no DRM from day 0. Zero. Zip. Nada,” the man said. “We’ve fiddled with DRM in the past (Oh boy! How young and naïve we were;)) and that’s enough. Lesson learned.”
While what he’s saying does apply to physcail copies and those bought from GOG — which CD Projekt owns — they are of course going to put The Witcher 3 on Steam, which is a DRM platform. But the point is that if you don’t want DRM, you can always avoid it. There will be no stopping you from being free.