GDC 2018 - Siren's Amazing Features?

Saw an article on a website “FXGuide”

that mentions the following:

“The actual face is rendered at 60 fps in real time and includes subtle facial hair and new advanced skin shaders from the UE4 team. Tencent and Epic’s engineers have introduced new backscatter algorithms and a new dual specular lobes. The glossy specular layer(s) represent light that is reflected immediately at the boundary of the skin. The 2nd specular lobe sits underneath the primary specular lobe and is attenuated by it.”

Is this - backscatter & dual lobe specular - a new shader set as part of an upcoming Unreal release, or was this just a fancy way of saying that they compiled a shader that emulated this?