That is in the first video right? I think that's just what they call their developer's tool in general, it's not a concrete product for end-user. For Corona, that just means Embree and OpenDenoiser. And those work identically on Intel and AMD, it's not like nVidia's CUDA thing.
I think Intel wanted to showcase that they are also software company who can optimize past the hardware alone, which can be useful when they're behind a bit :- ).
Intel's OpenImage Denoiser now also runs on GPU as well, hopefully Corona integrates it like this so we can swap it from the Optix and use during Interactive.
(Interestingly, Blender also integrated Denoiser presets like Fast vs Accurate).