I'm not sure when it shipped (it certainly may have not launched with the first version of the engine), but it is currently called "Light Propagation Volumes."
That's actually a different things. Light Propagation Volumes (LPV) is real-time global illumination first used in Cryengine 3 in 2009. http://advances.realtimerendering.com/s2009/Light_Propagatio...
SVOGI (Sparse Voxel Octree Global Illumination) which is first demoed by Unreal 4, yet it never shipped due performances problems. Meanwhile Cryengine manage to get it working with minimal performances penalty (only 10%) and have shipped games with it (Kingdom Come: Deliverance) https://www.youtube.com/watch?v=PEfqtOYjolE