User blog comment:Damac1214/Back in Black - Call of Duty: Black Ops III teased, reveal trailer coming April 26th/@comment-1899606-20150409193726/@comment-5290320-20150410043159

Most likely BO3 will take place right after Black Ops 2 with Menendez still alive and in prison (that timeline being canon now) and Dr. Salim will be working in tandem with him to continue Cordis Die.