Not sure if you are still thinking about micro transactions for dlc with bo2 which i honestly have given up hope on at this point. Or if you are talking about treyarchs next cod title. Its a pretty safe bet to say zombies is gonna come back as long as it sells and ppl ask for it. I believe bo2 is done not even sure if this game is gonna get 1 last patch that it needs. So it looks like we are gonna have to wait for treyarchs next cod because micro dlc for bo2 doesn't sound like its happening seeing as the next cod already dropped.