It's a conforming replacement head for v4/m4... similar to his May head prop or MayaX's Hitomi/Tomo conforming replacement heads. I'm assuming that it's either SSS materials or weight mapped head parts that require the specified Poser 10+... haven't looked at it yet. Just from a quick examination of the promo it looks like it's based off of 3Dream's Lusitana figure mesh/free poser figure resource that he released a few years back. The look is unmistakable.

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W10 Pro, HP Envy X360 Laptop, Intel Core i7-10510U, NVIDIA GeForce MX250, Intel UHD, 16 GB DDR4-2400 SDRAM, 1 TB PCIe NVMe M.2 SSD

Mudbox 2022, Adobe PS CC, Poser Pro 11.3, Blender 2.9, Wings3D 2.2.5

My Freestuff and Gallery at ShareCG