In response to a question about whether Back 4 Blood could be played offline in solo mode with AI teammates, developers Turtle Rock replied, "We're looking for ways to be able to support offline for the future, but you'll need an internet connection to play the launch." It's a shame, because both Left 4 Dead games support the game offline and some players expected Back 4 Blood to stay the same. It will also not have split screen playback at launch, with Turtle Rock pointing this out"We would love to support him in the future, but we won't throw him with him."
We expect both features to appear in post-release updates. Turtle Rock won goodwill recently by announcing that the DLC will be accessible to all players in a game as long as the leader owns it, as is the case in games like Vermintide 2. It’s a relief to know that the DLC won’t fragment players.
Back 4 Blood will be released on October 12 and will have one PvP mode that allows a team to control zombies.