it was in the thread you asked about it in lol.on ccg forums.
its obvious what they done. they made the mod for frankie to video.so with small numbers and modding it works. for big amount of players = no.
its pretty simple to see why. no arma mod with so many zombies and the amount of players works well. ever.
so imagine 60-100 people and those zombies. it just wont happen.it would be a slide show,unplayable.
if it did work and was fine they would have got it out already.
if you read in this thread i posted about it in august !
link to thread
http://customcombatgaming.com/forums/index.php?/topic/21532-what-is-this-servermod-dayz-exile-mod/
basically no evidence of this mod ever coming out to servers.