But they've been working on this for at least a year, now I know Poser changed hands in the meantime, but the team behind PP remained the same. And they dropped the Quidam connection, which must've sped up the process  of writing the app.
As for me, I'n not buying any new Poser if they don't implement some kind of muscle rig to avoid those awful joints. Spent way too much money on it already (apps, figures and props), and hardly use it these days.