AusGamers has written an in-depth preview for Call of Cthulhu and highlights unique features such as death actually affecting your sanity when you restart at a checkpoint and how the game will test your understanding of free will. They also reveal that completionists can milk 20-odd hours out of the game and that Cyanide Studios is committed to releasing it this year.
Source: N4G PC Preview: How Call of Cthulhu Intends to Break Your Sanity