We're getting much closer to the new release date of The Witcher 3: Wild Hunt, with CD Projekt Red teasing that there will be over 200 hours of content.
Senior Game Designer on The Witcher 3: Wild Hunt, Damien Monnier, said on Twitter that this 200 hour length came from "everything" - which includes side quests, and everything in between. Comparing this to The Witcher 2, which had around 50 hours of content - inclusive of time playing around - this is a huge increase in content.
You're not going to want to get through 100 hours of gameplay and die with the new "Dark" gameplay mode, where death is permanent.