At the moment there are no plans for MP. We're very focused on a solid single player experience. But who knows? Maybe once SP is done we'll consider this.
Although multiplayer would be awesome I think that this is the perfect stance to have for this game, unlike others where players do everything and multiplayer would make things faster this is made plenty fast with the main feature of the game (the bots), I hope you do add multiplayer at the end of primary feature development.