Image quality results have been added to the Zeiss Milvus 100mm f/2M Lens page.
Image sharpness, while extremely good, is not alone going to drive many upgrades from the Zeiss 100mm f/2 Macro Lens because ... it was already great. However, image sharpness is not going to impede anyone considering the purchase of this new Milvus lens as it is also a great one.
B&H has the Zeiss Milvus 100mm f/2M Lens in stock.