I believe it's the final design physically. I'm guessing if they're sending me a survey form if there's any changes it'll most likely be firmware changes instead. The firmware is still at 1.0 only. I must say that at least with my JVC/Victor HA-FX700 I'm hard pressed to find a discernible difference. Maybe ever so slightly more revealing whereas the P1 a little more "airy". This was more apparent on classical music than say with Jazz. And with Hip-Hop, I couldn't tell a difference at all. Sorry about my terminology, I'm still trying to learn the jargon.
I may be able to provide a better review when I get my UM SE530x8 back from repair.
Huge knob!? Seen the HP-P1 knob instead!?