I wouldn't doubt it.
The novel is about the last man on earth, holed up in his home all night, while the vampires try to coax him out. By day, he travels throughout the empty town, going from house to house, destroying the sleeping creatures. He's not an action hero or a superman. He's an average, middle-aged, middle-class survivor of a worldwide plague who finds himself in an extraordinary circumstance.
It probably wouldn't make such an "exciting" movie had the filmmakers gone this route, so as in The Omega Man, they turned a horror/suspense novel into more of an action film.
Wonder how the filmmakers will work the title into the film. In the novel, Robert Neville is perceived as the monster, the destroyer, who exterminates the creatures of the night with wooden stakes or by dragging their sleeping bodies out into the sunlight. He is the last of his kind: "I am legend."
This film has been on and off for years. At one point, it was to have starred Arnold Schwarzenegger.