I dont know where i heared or read it. but apparently there is one developer from ARMA 2 helping out with the development of DayZ. So thats good news (and current build kinda sucks, because the error currently in it that keeps loading a char)
also that there is going to be a mod like that (or DLC) for ARMA 3 AND that arma 3 supports 200 player maps!
i like these developments