Zbrush Style Transfer Renderer
The demo renders look more advanced than a toon shader, but perhaps something more sophisticated like an AI powered style transfer. If I'm correct, then an artist would provide a stylized reference image and then Zbrush would render results that would match the style of the provided sample image. Show it a hand painted illustration and get a hand painted render like magic! It's inevitable that Content creation apps will deploy AI more and more as time goes by, why not Zbrush?