Correction:

A Panasonic fat cat (and probably also a big wig) wrote in to let us know that Panasonic does indeed make a Blu-ray player that can play 1.1 Blu-ray discs: “The current Panasonic model available (DMP-BD30) is based on version 1.1 (BonusView) and capable of playing Blu-ray discs offering the added interactive features such as PiP.”