Atomontage has been around for many years now without any release. The two Achilles heels of finely detailed voxel engines have historically been animation and lighting. Based on the video, it looks like they have animation now but the lighting doesn't seem to be any better.

All of the shading that I've seen in past Atomontage videos has been screen space ambient occlusion, which is a great effect but is no substitute for real lighting with dynamic shadows. I've also seen them use AO baked directly into the voxel models.

I just wish that they would actually release something instead of posting countless tech demo videos. If the technology is so great, why aren't they trying to put it in the hands of real game developers right now? The whole thing smells of vaporware...