Actually it could be hacked to work for Active 3D displays (assuming they all use the same frame order ... and assuming you're display has a 48Hz mode).Please explain to me how 48fps would work on a tv that is either 30fps or 60fps?
But since you'd need to send it via framepacking, it doesn't make sense from a rendering/control perspective. Not to mention the actual number of TV's that support it are limited.