Sparrow

You mentioned shacktactical as an example of high fps in MP, just a quote from dslyecxi from one of his videos: "Arma 3 performs very poorly in multiplayer on the Altis terrain. It's just not fun to play right now in ST MP at playercounts even as "low" as 50-60 people. We'll need to see some performance improvements before we really start playing it seriously." So yeah, MP performance have not only not improved, it is even worse than in Arma 2.

Also remember we still dont have proper dedicated servers, just client hosted ones. Avoid using multiplayer as reference for performance.

I gues they wouldnt call it an alpha if the developers didnt want it to be an alpha.

People need to realize that an Alpha is for testing, its not a demo.

Avaible in Steam and BIS store according to arma3.com. Only the supporter edition seems to be exclusive through BIS store.

+1 to this. The first time I thought the Alpha option only gives access to the Alpha test and not to the full game later.