Arma 3 is coming out at the end of this year and will have flashy graphics which this game is sort of lacking. Unfortunately I won't be playing that as I can't even turn on antialiasing Arma 2 without graphics lagging - even with a quad core and a 1gb Geforce, silly laptops.
DayZ will probably be available for Arma 3 upon release date as the person that made DayZ works for the company that develops the game; that is if it is not released as a stand-alone game.