I had my fit done last night. It's a MASSIVE change. We slid my saddle way forward and way up. I'm not sure how I'm going to respond to/like this change, but we will see how things go as I start riding the new position this week.
To add some context, I was running a 10cm saddle set back, on a Fizik Arione, which is a pretty long saddle, so I was way behind the BB. And that was reduced from about 12cm a year or so ago.