Thanks for the reply, and I realized that video was very old when I went back to close it. Also I heard about the community alpha while watching some other, more recent, videos from the team, and I am extremely excited for that. I can't wait to see the progress this very talented team has made. It does disappoint me to hear, though, the disguise system may be removed from the final product or at least constricted to pre-scripted moments. I thought that would be a fun mechanic to play around with in the editor in order to create more interesting infiltration type missions.
I came up with another question though, while playing Arma 2. I was wondering if the warfare, or a similar game mode is supposed to be included in Arma 3. I thought to ask because I saw people say they didn't like warfare, but I enjoyed it, other than the difficult to command AI which is, from what I hear, being improved on in Arma 3.