COD: Black Ops 3 Has 4 Player Co-op For the Campaign

I'm officially interested in this game for the co-op mode but the article talks about more new stuff coming and it sounds good overall.

'Call of Duty: Black Ops 3' is fast, frantic and adds a co-op campaign http://www.engadget.com/2015/04/26/call-of-duty-black-ops-3/?ncid=rss_truncated