The Blu-ray Disc Assn. has mandated that all hardware streeting after that date must be able to play back picture-in-picture video, as driven by BD Java interactive technology. Many players on shelves now can handle BD Java, but to varying degrees. Few Blu-ray players include picture-in-picture capability, for instance, not even the PlayStation 3.
Sony’s current and summer 2007 stand-alone models and available Pioneer and Philips units are among those lacking the picture-in-picture feature.
With two different pools of players at retail in the near future, studios will have to navigate how to best create titles that play universally. A title with a highly touted picture-in-picture feature, for example, might not play properly on all players.
Here's the most interesting part...
Yet Parsons doubts that firmware alone would facilitate picture-in-picture, a relatively complicated part of the BD Java specification.