I used the preset with the new model. I got this in feb and it was a couple of months before I realised it was the new one! From what I have read you don’t need the preset as the curve is much flatter. I have left it on as I like the warmer filler sound. You can also build your own eq profile or download. There are links to curves on github somewhere.
Either way don’t hold off- they are astonishing. I am still rediscovering old albums and several months on still am getting blown away by how these head phones reveal and present music I thought I knew intimately.