I just received pictures of the new PL II Series, including the PL500 II. There should be a press release shortly, or maybe it's already out.
I won't post the picture because I don't have permission (and I don't know how
), but I will say that the PL500 is nearly twice as big as the PL300 and cost nearly three times as much.
If I had a much bigger room for my two channel I think i'd buy them before hearing them, which I did with my first PL300's.