I'm going to start saving for the PM-2. By the time it is released there should be plenty of reviews of the PM-1 and they are supposed to sound virtually the same from what I gather in the pre release blurb. I don't really need a 400 dollar wooden box to hold my headphones in.
A couple of people just posted impressions of the PM-1s today in the dedicated thread for them at Head-Fi.
I wouldn't count on them being virtually the same for that difference in price. Probably bound to be some differences, or why would anyone want to spend the extra few hundred dollars?