I am also kind of "waiting on" this Plasma to come out and wanting to read reviews to find out if LG will deliver on the supposedly greatly improved black levels.
Over in the LCD forum under the "LG 2012 TV line-up leaks! LM9600, LM8600 & PM9700" topic I mentioned an odd article I found which purported to be about the PM9700s, the article has been removed since I posted the link. It seemed to be saying the PM9700 is a hybrid between a LED and a Plasma -- which frankly makes absolutely no sense to me. Someone in that topic claimed to have spoken with LG support and reported they said there were two different products under the "PM9700" model number.
My guess, LG is launching some kind of "new" LED technology which is probably related to OLED somehow, but they are calling PLED. And someone at LG has managed to get their model numbers confused -- causing a mix-up between this new product and the pending release of the 2012 PM9700 Plasmas.
If you don't want to know, don't ask. The truth is brutal, prepare for pain.