Arma 3 for Linux is cool news! I played all through OFP 1 + 2, Arma 2 and DayZ in my previous W$ life.
Since Valve started to port games to Linux, I'm only buying games for Linux, because I like to support the OS.
It's money that lets company get interested in you.
I've read an article about Arma 3 and Linux on a news site. But the Steam store does not mention Linux support.
But as I've found this thread, I immediately bought it. Downloading took 9 minutes @28MB/s.
Now I can start to learn the successor of OFP and Arma 2.. :-)
Thanx for supporting the Pengiun!