Just watched the trailer and the gameplay video. I was quite hoping that the graphics engine would be the only thing shared with ArmA2. Unfortunately it looks like everything is the same, interface, anims, even some objects, and it's just a total conversion mod. Bit of a letdown.
Windows Vista x64 SP2
IntelŪ Core i7 CPU 920 @ 2.67GHz (8 CPUs), ~2.7GHz
NVIDIA GeForce GTX 580