Seriously, this is a chicken-and-egg situation right now. OEMs are starting to get more interested in Linux, and one of their big questions will be whether BD playback is important for their products. If the decision is "yes", then one or more player apps would probably show up fairly quickly. Without an obvious market, though, it's not worth it for the player app vendors to make a releaseable product.
Anyhow, my take is this... If it were as simple as software players, John, we wouldn't BE having the conversation we're currently having on the subject- the DRM would be a seperate piece of the accelerator and wouldn't be intermeshed with the video decode portions, etc.