Was about to update here and see that I'm not the first...which is good.
I couldn’t tell you for sure but it does seem like there is a difference, and a good one at that. I’ve had to bring my Mids up while before I felt like I needed to run them down a bit. Overall, it seems like whatever they did brought more clarity to the upper mids and highs. It also feels like the soundstage has been raised to the dash whereas before it seemed to draw some of the frequencies down to the doors.
I have the HK system with everything stock except for an amp and subs, with the stock sub still in place but unplugged. I also have the LLJ Customs ANC bypass harness installed at the moment.
It doesn't look like any on-screen options changed. But I'm sure that has been covered here before now. I dismissed this back in May as possibly never going to happen so I haven't read anything more recent.