I got one and it's a vast improvement to previous versions of the super down. Noticeable warmer, more wind resistant and definitely more water resistant, pit zips are great, material seems to be pretty durable and fit is better. previous super down I wore a XLarge, this one is cut better for me and it's a Large with room to layer. It's my go to puffy now.
New Pro is what I was talking about. I wear an XL in most Kuiu jackets and tops, except the Yukon, I wear a Large in it. The pro fit is larger than previous models, I wear a large in it. Fits great under my Yukon, but I'm able to wear it over a Merino 145 and 210 hooded together and it's a good fit. It's about the same fit as a XLarge guide jacket.