I don't think it will ever happen. It's too much of an obscure game to generate enough hype adn even as a game, it wasn't that much good to begin with. Besides it would have strong competition from games like Call of Juarez and the Red Dead series.
Instead I recommend you to play Smokin' Guns
. It isn't graphically strong, but it's really fun and entertaining to play, and it even has some in-game graphic filters that make it look cartoony, a bit like Outlaws did.