A few examples of functionality:

Easier to use styling tools

Density maps

Randomization

Multi-threading support

I don't think the hair is actually dynamic, though. Perhaps that's why he was able to accomplish so much with a first release.

______________

Hardware: AMD Ryzen 9 3900X/MSI MAG570 Tomahawk X570/Zotac Geforce GTX 1650 Super 4GB/32GB OLOy RAM

Software: Windows 10 Professional/Poser Pro 11/Photoshop/Postworkshop 3