User blog comment:Damac1214/Back in Black - Call of Duty: Black Ops III teased, reveal trailer coming April 26th/@comment-1187559-20150409194934

I bet not only will this force a canon on us, but it'll do it in a way that wasn't even possible in BOII. Such as having both Karma and Harper alive, because you can already tell they're going to bring Harper back. I just hope this story is separate enough from BOII so the player can have whatever choices they want without it having an impact on this. But since this is Black Ops 3 I somewhat doubt that.