Arma 3 takes place in year 2034 on mainly 2 Greek islands, which offer around 20 km² of area, 20 different weapons, about 18 vehicles and many more extras during the beta phase. The main objective of story mode is to push back Iranian invaders - who gained the upper hand of the region due to massive oil resources - with help of the NATO.
In case that your desire was awaken by now, it's possible to purchase beta keys - which come with a voucher for the final game edition - via Steam or the Bohemia store. It can be certainly said, that there is going to be a DVD version as well. When taking a closer look at the end of this trailer, one can see a cover of Arma 3. An exact release date is now known, yet.
... or maybe it was arma 2 i dont know 
