I my self just recently tried it after long time not playing. Yes, they added Coop and its amazing. AI is very smart - They hide behind beds, you also can arrest them if they surrender and most surprising for me was scoring system. Its like here that we tried to achieve with Matts hacker skills on Swat 4 coop servers
Over all its very smooth movement after updates, as I was one of the first testers in pre alpha, with humble opinion can say that its very ready to play coop and pvp as its alos fun to do.
So if someone up for coop, reach me out in steam or write here